# What is inertia?

# What is moment of inertia?

A2 Moment of inertia is the term used to measure or quantify the amount of mass located at an object's extremities. For example if all the mass of an object was located in a small compact size (like a lead ball) its moment of inertia would be small compared to the same amount of mass shaped into a… dumbell. Because a dumbell has most of its mass located farther from its center. But there is a "qualification" here. Moment of inertia is calculated relative to a hypothetical spin axis. Once you choose the spin axis then you calculate the moment of inertia by multiplying the mass times its distance to the spin axis squared; I = MR^2 So in the example between the sphere and the dumbell the moment of inertia of the dumbell would be significantly larger relative to a spin axis perpendicular to the dumbell length. If you instead choose your spin axis to lie thru the dumbell parallel to its length then its moment of inertia,relative to this axis, would be much smaller because the mass would be located closer to that axis. And ,in fact, it might even be smaller then the moment of inertia of a sphere about an axis thru its center. A way to store kinetic energy is with a spinning object. In calculating how much energy would be stored in a spinning object the energy is proportional to the moment of inertia. So all other things being equal you would choose a spin axis and object shape that gave you the largest moment of inertia for maximum stored energy. .
SIMPLY "MOI" MEANS Moment of inertia is the characteristic of an object to resist rotation. T IS DIRECTLY PROPORTIONAL TO I where T is the torque applied to the object I is the moment of inertia of the object I Depends on following elements mass of the element . Distance of the element from the axis of rotation. For finding I (Application purpose) for Different sections we must know how to find out Center of gravity of a Section. ( Full Answer )

# What does inertia mean?

Inertia means: the tendency of a body to maintain its state of rest or uniform motion unless acted upon by an external force. Inertia means the tendency of an object to resist a change in motion unless an outside force acts on the object

# What is an example of inertia?

When something is acted upon by an outside force so it would be like if you are swinging and a ball is thrown at you, you slow down because that ball hit you.

# What is a inertia?

There is no "A inertia." Its just inertia and inertia is the measure of an objects to stay at rest or to keep moving.

# Examples of inertia?

if you are in a car, moving at 100km/h you are also moving at 100km/h and lets say the driver suddenly applies the brake,you will slide forward and then slam back into the seat.....right?.......this because the car stops but you continue moving.......how?........because the brakes are applied to the… car not you......that's why you should always put on your seatbelt. ( Full Answer )

# How does inertia work?

It is exactly the same as momentum and covered by Newton's first law of motion. Inertia is a way of expressing the force required to get an object to move from rest, or the force required to change the velocity or direction of an object in motion. Anything that has mass will have inertia - a "resi…stance to move or change velocity or direction of motion". ( Full Answer )

# What does inertia depend on?

Inertia measures an object's tendency to remain at rest or keep moving with constant velocity. Inertia depends on the direction of the object. Hope this helped! :D

# What is inertia related to?

Inertia is a body's resistance to moving, or to change velocity once under motion. It is a function of mass and velocity. .
Inertia can also be described as a body's tendancy to maintain momentum - once it has a specific momentum, it will maintain that same momentum until an outside force acts up…on the body. .
Momentum is calculated using the following formula: .
P = mv .
Where P is momentum (a vector quantity), m is the mass of the object (a scalar quantity), and v is the object's velocity (a vector quantity). ( Full Answer )

# What is rotational inertia?

Rotational inertia is sometimes called spin. It involves the movement of a mass around an axis. This moving mass will have some measure of kinetic energy that is due to the fact that it is spinning. The variables are the shape and the mass of the object, the way the mass is distributed within the ob…ject, the speed of its rotation, and the location of the axis of spin through the object. The moment of inertia might also be called angular mass, mass moment of inertia, rotational inertia, or polar moment of inertia of mass. Use the link below for more information. ( Full Answer )

# What are examples of inertia?

When something is acted upon by an outside force so it would be like if you are swinging and a ball is thrown at you, you slow down because that ball hit you. More examples: The ever popular brake one. When you brake your car suddenly you go flying right? Well hopefully you'd be wearing your seat b…elt because that would be the outside force. The seat belt stops you from flying through the windshield. If not, then the windshield is the outside force slowing you down. That's the most obvious one. Think of a ball and a bat (above answer)... or a boulder rolling down a hill. Okay another example is when, say in a car ride you go around one of those on-ramp things in a circle, you get pressed up against the side of the car right? That is inertia because your body wants to go straight but the outside force (aka the car) is turning you. I hope that helps! ( Full Answer )

# What is an inertia?

inertia is force of matter. It's the force to go forward. For example, earth rotates around the sun. with out inertia, earth would not go around the sun. It would go straight into the sun, because of gravity. Also, it is like throwing a ball. without Inertia, the ball would just fall to the ground, …not go forward. ( Full Answer )

# Formula for inertia?

In America the formula for inertia = .5 mass X velocity 2 OR MASS (which equals, weight divided by grams) times (which equals, X) VELOCITY (which equals, feet per second divided by time)

# How do you increase inertia?

The moment of inertia is directly related to an objects mass.Increase the moment of inertia can be initiated by spreading massoutwards radially. For example, a figure skater can alter theirspin velocity by moving their arms inward to go faster, and placingthem out to slow down. That is how the momen…t of inertia isincreased or decreased accordingly. ( Full Answer )

# What is inertia of motion?

Inertia is the tendency of an object to resist a change in motion. It depends upon the objects mass. If an object has more mass, it is more difficult to get it moving. Once it is moving, it is harder to slow it down.

# Formula of inertia?

There are two laws about inertia. The First Law has no formula. It is just a statement that says "an object will continue at constant velocity ,or at rest, until a net force acts on it". This property that requires a force to change its state of motion (or rest) is called the object's "inertia". The… Second Law is a formula that describes how an object will move when a net force acts on it. The formula is F = ma. Where, F, is the force and , a , is the objects acceleration. And , m , is the objects mass, which is a measure of the object's inertia. So you could write the formula as a = F/m and in this way you see if the object's mass (inertia) is increased then in order to get the same acceleration you must increase the force. These two laws describe how an object's inertia ,or mass, resists changes in its motion. ( Full Answer )

# Inertia what does it mean?

Inertia is the inherent property of a body that makes it oppose any force that would cause a change in its motion. A body at rest and a body in motion both oppose forces that might cause acceleration. The inertia of a body can be measured by its mass, which governs its resistance to the action of… a force, or by its moment of inertia about a specified axis, which measures its resistance to the action of a torque about the same axis. ( Full Answer )

# Inertia is to mass?

inertia is the laziness of an object, or an objects resistance to change its state of motion, or how easy it is to start or stop an object. Mass is the measure of an object's inertia. Therefore with more mass, an object has more inertia..

# What does inertia do?

Inertia is the resistance of an object to change it state of rest or motion. when you are standing in a moving bus and it suddenly stops you tend to fall backward. This is due to inertia of motion. Body resists the change in motion due to which u fall backward. so inertia exactly opposes or resis…ts your change in motion. ( Full Answer )

# What is the opposite of inertia?

Well, there are several ways to go about answering this. Inertia is the property of an object at rest resisting motion. First: Pmomentum is the property of an object in motion to resist change in that motion. Second: Potential Energy is the property of an object at rest to begin moving, it t…ypically results from height. Third: Kinetic Energy is the property of an object in motion to keep moving. [here both of our categories are opposite of inertia] This is likely the best bet. Any of these are good options if your answer is limited to the field of Fizex. (Then again, Quantum physics is fairly different from inertia too.) Finally: If your answer isn't related to Fizex, Waffles, Historical figures, language, and philosophy are very different from Inertial. ( Full Answer )

# Do planets have inertia?

YES PALNETS DO HAVE INERTIA ANYTHING THAT HAS MASS OR TAKES UP SPACE HAS INERTIA.OBJECTS WITH GREATER MASS HAVE GREATER INERTIA . .

# What does inertia apply to?

uhmm i think you need to go look it up somewhere else because this isn't right(:

# What exactly is inertia?

\n.
\nInertia is the resistance of motion of an object. The more inertia, the harder it is to move something. The less inertia, the easier it is to move. Take a bowling ball and a marble. The marble can be flicked by the finger, because it has less inertia. The bowling ball takes the entire hand be…cause it has more inertia than the marble.\n.
\nAccording to Newton's laws, an object that is moving tends to continue in motion. A moving object has inertia as it has Mass and Velocity. An object that is not moving requires a Force exerted on the Mass to start it moving. ( Full Answer )

# What is inertia selling?

It is the practice of supplying unordered items seeking payment for them. This act is totally prohibited by law.

# Inertia is the property of what?

matter is the conventional answer to this question. Classical physics would have us believe that inertia is a sort of "kinetic energy" that causes matter to resist changes in it's momentum. Either at rest, or in motion. To be more accurate, intertia is a property of the interaction between matter…, and the space-time around it. A mass that is accelerating through space-time compresses space-time ahead of it, and stretches space-time behind it. When the mass then stops accelerating, and maintains a steady velocity the space-time around it equalizes forming a moving ripple through space-time containing the object, conserving it's angular momentum. Deceleration reverses this by pressing up against the rear end of this ripple slowing it down.(G-forces are a result of space-time resisting this compression and expansion) We can then see from this the link between "intertia" and "gravity" . Gravity causes a much weaker rippling through space-time, not caused by the angular momentum of atoms/mollecules/objects through space-time, but through the circular momentum of the electrons circling the atoms of a LARGE body. Electrons carry much less total mass by themselves, so require much much more matter to cause gravitational effects. Gravity can be likened to a succession of moving compression waves through space-time. Each compression wave "pulls" other objects towards it, as the space-time between the two objects is squeezed closer together. ( Full Answer )

# Inertia is what to mass?

Inertia is a bodies resistance to velocity change upon applicationof a force, so essentially its directly proportional to its mass.

# Inertia is the tendency to do what?

Newton First Law of motion states that.
"A body continues in its state of rest or of uniform motion in a straight line until/unless an external force is applied upon it".
Why is it so?.
"Inertia is the property of a body to resist any change in its state of rest or of uniform motion in a straight… line".
Newton's first law of motion is also therefore known as law of inertia because of the inertia the body will remain in its initial state forever..
And mass is the measure of the inertia of a body. ( Full Answer )

# What is inertia and what is the dimension of inertia?

inertia comes from the word iner , meaning lazy or idle. hence inertia is the tendency of a body to remain unchanged. it is also the tendency that opposes any change in the state of rest of a body or the state of uniform velocity in a straight line. dimension of inertia is [ML 0 T 0 ]

# What is inertia define it?

Inertia is the force push against something when another thing is in motion. For example if I threw a ball force is put on the ball and with the help of gravity the ball comes to the ground. The 3 basic laws of motion that Isaac Newton discovered covered the laws and explanation of motion and inerti…a I. Every object in a state of uniform motion tends to remain in that state of motion unless an external force is applied to it. II. The relationship between an object's mass m , its acceleration a, and the applied force F is F = ma . Acceleration and force are vectors (as indicated by their symbols being displayed in slant bold font); in this law the direction of the force vector is the same as the direction of the acceleration vector. III. For every action there is an equal and opposite reaction. ( Full Answer )

# Do people have inertia?

If you refer to the physical property: yes. Any object that has a mass, has inertia.

# What is the equation for inertia?

Definition A simple definition of the moment of inertia (with respect to a given axis of rotation) of any object, be it a point mass or a 3D-structure, is given by:.
where m is mass and r is the perpendicular distance to the axis of rotation. Detailed analysis The (scalar) moment of inert…ia of a point mass rotating about a known axis is defined by.
The moment of inertia is additive. Thus, for a rigid body consisting of N point masses m i with distances r i to the rotation axis, the total moment of inertia equals the sum of the point-mass moments of inertia:.
The mass distribution along the axis of rotation has no effect on the moment of inertia. For a solid body described by a mass density function, Ï ( r ), the moment of inertia about a known axis can be calculated by integrating the square of the distance (weighted by the mass density) from a point in the body to the rotation axis:.
where.
V is the volume occupied by the object. Ï is the spatial density function of the object, and r = ( r , Î¸ , Ï ), ( x , y , z ), or ( r , Î¸ , z ) is the vector (orthogonal to the axis of rotation) between the axis of rotation and the point in the body. .
Diagram for the calculation of a disk's moment of inertia. Here c is 1/2 and is the radius used in determining the moment..
Based on dimensional analysis alone, the moment of inertia of a non-point object must take the form:.
where.
M is the mass L is a length dimension taken from the centre of mass (in some cases, the length of the object is used instead.) c is a dimensionless constant called the inertial constant that varies with the object in consideration. .
Inertial constants are used to account for the differences in the placement of the mass from the center of rotation. Examples include: .
c = 1, thin ring or thin-walled cylinder around its center, .
c = 2/5, solid sphere around its center .
c = 1/2, solid cylinder or disk around its center. When c is 1, the length ( L ) is called the radius of gyration . For more examples, see the List of moments of inertia. Parallel axis theorem .
Main article: Parallel axis theorem.
Once the moment of inertia has been calculated for rotations about the center of mass of a rigid body, one can conveniently recalculate the moment of inertia for all parallel rotation axes as well, without having to resort to the formal definition. If the axis of rotation is displaced by a distance r from the center of mass axis of rotation (e.g., spinning a disc about a point on its periphery, rather than through its center,) the displaced and center-moment of inertia are related as follows:.
This theorem is also known as the parallel axes rule and is a special case of Steiner's parallel-axis theorem . Composite bodies If a body can be decomposed (either physically or conceptually) into several constituent parts, then the moment of inertia of the body about a given axis is obtained by summing the moments of inertia of each constituent part around the same given axis. [2] Equations involving the moment of inertia The rotational kinetic energy of a rigid body can be expressed in terms of its moment of inertia. For a system with N point masses m i moving with speeds v i , the rotational kinetic energy T equals.
where Ï is the common angular velocity (in radians per second). The final expression I Ï 2 / 2 also holds for a mass density function with a generalization of the above derivation from a discrete summation to an integration. In the special case where the angular momentum vector is parallel to the angular velocity vector, one can relate them by the equation.
where L is the angular momentum and Ï is the angular velocity. However, this equation does not hold in many cases of interest, such as the torque-free precession of a rotating object, although its more general tensor form is always correct. When the moment of inertia is constant, one can also relate the torque on an object and its angular acceleration in a similar equation:.
where Ï is the torque and Î± is the angular acceleration.Moment of inertia tensor In three dimensions, if the axis of rotation is not given, we need to be able to generalize the scalar moment of inertia to a quantity that allows us to compute a moment of inertia about arbitrary axes. This quantity is as the moment of inertia tensor and can be represented as a symmetric positive semi-definite matrix, I . This representation elegantly generalizes the scalar case: The angular momentum vector, is related to the rotation velocity vector kinetic energy is given by.
as compared with.
in the scalar case. Like the scalar moment of inertia, the moment of inertia tensor may be calculated with respect to any point in space, but for practical purposes, the center of mass is almost always used. Definition For a rigid object of N point masses m k , the moment of inertia tensor is given by.
, .
where.
and I 12 = I 21 , I 13 = I 31 , and I 23 = I 32 . (Thus I is a symmetric tensor.) Here I x x denotes the moment of inertia around the x -axis when the objects are rotated around the x-axis, I x y denotes the moment of inertia around the y -axis when the objects are rotated around the x -axis, and so on. These quantities can be generalized to an object with distributed mass, described by a mass density function, in a similar fashion to the scalar moment of inertia. One then has.
where is their outer product, E 3 is the 3 Ã 3 identity matrix, and V is a region of space completely containing the object. Alternatively, the equation above can be represented in a component-based method. Recognizing that, in the above expression, the scalars I i j with are called the products of inertia , a generalized form of the products of inertia can be given as.
The diagonal elements of I are called the principal moments of inertia . ( Full Answer )

# What is the dfinition for inertia?

The rotational kinetic energy of a rigid body can be expressed in terms of its moment of inertia. For a system with N point masses m i moving with speeds v i , the rotational kinetic energy T equals.
where Ï is the common angular velocity (in radians per second). The final expressio…n I Ï 2 / 2 also holds for a mass density function with a generalization of the above derivation from a discrete summation to an integration. In the special case where the angular momentum vector is parallel to the angular velocity vector, one can relate them by the equation.
where L is the angular momentum and Ï is the angular velocity. However, this equation does not hold in many cases of interest, such as the torque-free precession of a rotating object, although its more general tensor form is always correct. When the moment of inertia is constant, one can also relate the torque on an object and its angular acceleration in a similar equation:.
where Ï is the torque and Î± is the angular acceleration. ( Full Answer )

# How can inertia be defined?

Inertia can be defined as the property of a body that makes it oppose any force that would cause a change in its motion.

# What is unot of inertia?

The word is "unit", not "unot". You can use kilograms (or any other unit of mass) for inertia. The more kilograms an object has, the greater its inertia.

# Does air have inertia?

Yes, any physical substance has inertia.There are a few different kinds of inertia, too. tHAT'S INCORRECT GENIUS

# What is inertia force?

It is important to learn many things in physics. Inertia Force isdefined as a force opposite to an accelerating force acting on abody, and equal to the product of the accelerating force and themass of the body.

# What is the abbreviation for inertia?

The abbreviation for inertia is simply I. This is a very commonsymbol used in sciences like physics for example.

# What is inertia of rest and inertia of motion?

Intertia is the tendency of an object to maintain its velocity: if an object is at rest, it has the tendency to remain at rest; if it is moving, the tendency is to keep moving with the same velocity. That is what happens if no forces act on the object; if forces act on the object, including gravitat…ion, friction, and others, its velocity will change. ( Full Answer )

# What has inertia?

Inertia is the resistance to changes in motion. Inertia is proportional to mass. Big masses resist changing their motion more than smaller masses. Every object remains in a state of rest or of uniform motion in a straight line unless acted upon by an outside force. Example: Objects at re…st remain at rest unless acted on by a net force. .
A lot of inertia! The large train resists changing its motion. .
Very little inertia. The small baby carriage has very little resistance to changes in motion. .
Since the train is so huge, it is difficult to change its speed. In fact, a large net force is required to change its speed or direction. .
Since the baby carriage is so small, it is very easy to change its speed or direction. A small net force is required to change its speed or direction. . ( Full Answer )

# How can you describe inertia?

Inertia is the inherent property of a body that makes it oppose any force that would cause a change in its motion. A body at rest and a body in motion both oppose forces that might cause acceleration. The inertia of a body can be measured by its mass, which governs its resistance to the action of… a force, or by its moment of inertia about a specified axis, which measures its resistance to the action of a torque about the same axis. ( Full Answer )

# What is unit of inertia?

there is no unit for inertia; inertia is determined by and therefore reflected by the mass of an object, and is a property of this object such that it does not change with speed, temperature etc.

# What is the inertia of motion?

Inertia of motion is the resistance mass has to motion. It also is the resistance in change in momentum. Momentum includes two things: velocity and direction. When an object changes its velocity, the momentum of the object resists the change. Also, when an object does change its velocity, its moment…um is directly changed. In general, the inertia of motion is matter's unwillingness to change velocity or momentum. ( Full Answer )

# What is the answer of inertia?

Inertia is the tendancy of an object to stay in rest or in motion. Newtons 1st law was the law of inertia.

# What is static inertia?

Static inertia is when a body at rest wants to stay at rest, or a body that is moving at a constant speed stays at the constant speed.

# What is measure of inertia?

Mass is a measure of inertia. Inertia is resistance to a change in motion. Mass and inertia are directly proportional. The greater the mass, the greater the inertia.

# What is electric inertia?

It is the amount of radiation emitted when accelerating a particle. It is a type of inertia because particles tend not to accelerate because they will emit photons (loose energy).

# Where is inertia based on?

Inertia is the tendency to not want to change, or in simple words, to keep doing what you're already doing. That means when a ball is rolling down the hill, it has inertia; it does not want to stop rolling. However, the ball will eventually stop because of friction or an object acting as an obstacle…. ( Full Answer )

# What is inertia with an example?

Inertia is the resistance of a physical object to a change in its state of motion or rest. One example of inertia is when you are just too tired to get up from the chair you have been in for the last several hours. Another is when you decide to stay home because going out would just take too much ef…fort on your part. ( Full Answer )

# What is inertia of rest-?

Inertia is resistance of any physical object to any change in its state of motion, including changes to its speed and direction.

# What are components of inertia?

Inertia is the tendency of a moving object to remain moving. I am not aware of any "components".

# What is inertia mean?

is the resistance of any physical object to any change in its stateof motion, including changes to its speed and direction.