# What is the relation between torque and angular momentum?

Torque is the rate of change of angular momentum.

### How angular momentum of the earth remain constant?

As there is no external torque acting on it, its angular momentum remains constant. This is according to the law of conservation of angular momentum

### When is the angular momentum of a system not conserved?

The angular momentum of a system is not conserved when a net external torque acts upon the system.

### What is the name of the mechanism that produces the greatest amount of torque?

An angular force would produce a large torque like angular momentum of a spinning wheel.

### What is the law of inertia for rotating systems in terms of angular momentum?

An object or system of objects will maintain its angular momentum unless acted upon by an external net torque.

### How do you change an objects momentum?

Momentum is of two kind. One is linear momentum and the other is angular momentum. Linear momentum is defined as the product of the mass and the velocity. Hence a vector quantity. To change the momentum of a given body with its mass constant, its velocity is to be changed. Velocity change could be made by changing its magnitude or direction or both. Angular momentum is the product of moment of inertial and the angular… Read More

### Law of the conservation of angular momentum applies which body?

Law of conservation of momentum applies to any body on which no external torque is acting.

### What is precession?

It gets reversed. The torque applied is equivalent to the cross product of the resulting angular precession frequencey and the angular momentum of whatever is spinning.

### Is Angular accelration is produced by torque?

no angular acceleration is not producd by torque is a factor of torque T= anguar aceleration X momentum I say yes, because torque is another word for a couple that is equivalent to two equal parallel forces in opposite directions but separated by a distance. Torque acting on an inertia produces angular acceleration exactly as a force acting on a mass produces linear acceleration. Actually the answer above does not make much sense to me… Read More

### Does gravitational force exert torque on satellite?

Since the gravitational force is always directed radially through the center of mass, the gravitational force can exert no torque on either body. Thus angular momentum is conserved. This means that the angular momentum of the orbiting object will always have the same value at any point in its orbit.

### Can a particle rotate without experiencing any torque?

Yes. Without torque, a rotating object will continue rotating indefinitely, due to conservation of angular momentum.

### What is mean by moment of inertia?

The moment of inertia is a tensor relating the angular velocity to the energy in angular motion and the angular momentum of a rigid body, and the angular acceleration to the torque. Roughly speaking, it is to angular motion what mass is to linear motion. The formula can be found at http://en.wikipedia.org/wiki/Moment_of_inertia .

### Conservation of angular momentum tells us?

Angular momentum will not change unless an external torque acts upon the system The short answer would be that angular momentum is conserved, i.e. it cannot be created nor destroyed. A more technical answer would be that there is a certain theorem in theoretical physics called Noether's theorem which shows that if a physical theory exhibits rotational invariance (i.e. the physics are the same even if you rotate the system) that angular momentum conservation is… Read More

### What is gyroscopic effect?

The gyroscopic effect is explained by the behavior of a gyroscope. The behavior of a gyroscope is torque applied perpendicular to its axis of rotation and also perpendicular to its angular momentum.

### Which physical quantity is conserved of an earth satellite?

Velocity of satellite and hence its linear momentum changes continuously due to the change in the direction of motion in a circular orbit. However, angular momentum is conserved as no external torque acts on the satellite.

### State the condition of rotational equilibrium?

sum of clockwise torque= sum of anti clockwise torque. IN otherwords sum of all torque is equal to zero. if a body is at rest(not rotating) or moving with constant angular velacity.then angular accerlation is zero. as a result torque is zero. torque=moment of inertia * angular accerlation constant angular velocity. angular accerlation is =0 torque =0

### 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 mi moving with speeds vi, the rotational kinetic energy T equals where ω is the common angular velocity (in radians per second). The final expression I ω2 / 2 also holds for a mass density function with a generalization of the above derivation from a discrete summation to an integration… Read More

### What is relation between torque and twist?

torque is given by me and twist automatic diveloped

### What is the difference between toeque and momentum?

Torque is vector energy e.g FxD and momentum is the product of mass and speed p= mv or velocity P=mV. Torque is a vector energy and Momentum is energy per unit speed, a vector or a scalar, W/c = Momentum.

### Does angular momentum requires an inertial frame?

nope...itz not necessary that the frame should be inertial....the only necesarry condition is that the TOTAL EXTERNAL TORQUE acting ABOUT THE REFERENCE AXIS should be ZERO...

### What law of conservation obeyed when a ballet dancer streches her hand out for slowing down?

The conserved quantity which causes a ballet dancer's rotation to slow down when their arms are outstretched is angular momentum. Mathematically, angular momentum L can be written as L = r X p or L = mvr where m is mass, r is the radial distance from the axis of rotation, and v is the velocity of the mass m. Conservation of momentum states that the aqngular momentum of a closed system is constant if… Read More

### Why do toilets swirl?

Toilet water swirls due to a law of motion called "Angular Momentum". This is one of the laws of planetary motion discovered by Keppler. It basically describes the natural movement of matter whether it be water in a toilet bowl, planets around a sun or galaxies around a black hole. This natural movement is of a circular nature. Of course in a toilet bowl often times the water shoots out at an angle upon flushing… Read More

### What is the difference between momentum and torque?

Momentum is the product of mass and velocity p=mv. Torque is vector energy T=fxd=fdsin(fd), the vector analogy of scalar energy, work W=f.d= -fdcos(fd).

### What is a gyroscope?

A gyroscope is a device for measuring or maintaining orientation, based on the principles of angular momentum.[1] Mechanically, a gyroscope is a spinning wheel or disk in which the axle is free to assume any orientation. Although this orientation does not remain fixed, it changes in response to an external torque much less and in a different direction than it would without the large angular momentum associated with the disk's high rate of spin and… Read More

### If a body is rotating is it necessarily being acted upon by an external torque?

No. Torque is required only for producing angular acceleration. A body rotates with constant angular velocity if no external torque acts on it.

### What is relation between speed of generator and its voltage and torque on generator shaft and current produced by generator?

power = torque * rpm

### What is Relation between torque and viscosity?

I'm guessing you're talking about a disc viscometer, in which case the higher the viscosity, the higher the measured torque.

### If a net torque is applied to an object that object will experience which of the following a constant angular speed angular acceleration or an increasing moment of inertia?

angular acceleration

### What is the principle of gyroscopic couple?

A gyroscope is a device for measuring or maintaining orientation, based on the principles of conservation of angular momentum. In essence, a mechanical gyroscope is a spinning wheel or disk whose axle is free to take any orientation. Although this orientation does not remain fixed, it changes in response to an external torque much less and in a different direction than it would without the large angular momentum associated with the disk's high rate of… Read More

### How do you increase the angular velocity of a rotating object?

Angular velocity just means how fast it's rotating. If youaa want more angular velocity, just rotate it faster or decrease the radius (move it closer to the center of rotation). Just like force = rate of change of momentum, you have torque= rate of change of angular moment Or We can increase the angular velocity of a rotating particle by applying a tangential force(i.e. accelaration) on the particle. Since the velocity of the particle is… Read More

### What is the difference between torsion and twisting of shaft?

Torque Torque is experienced in simple day to day activities such as turning a doorknob, fastening a bolt, turning the steering wheel, paddling a bicycle, or even turning your head. It must be noticed that in each and every one of these activities, the movements are circular or rotational movements. It can be shown that in every movement where a change in the angular momentum occurs, there is always a torque acting upon the object… Read More

### What are the formula for torque rotational equilibrium rotational inertia and angular momentum?

Each of these is, by itself, a fairly complex topic. I suggest you ask separate questions for each one; or even better, start by looking them up on the Wikipedia.For example, torque is the rotational equivalent of force; it is defined as the vector cross product of the lever arm times the force.

### How do you calculate Wind turbine torque?

Measure the rpm & calculate the torque as power divided by angular velocity

### How do you find torque of single phase synchronous motor?

You can use the relation that power equals torque times angular velocity. You start from the speed (rpm) and the horse power times 746 which gives the mechanical power in watts. To use the formula you have to use consistent units, which means torque is in Newton-metres and the angular velocity is in radians/second, in other words the rpm times 2.pi / 60. So the torque in Newton-metres is the power (watts) divided by the… Read More

### How the angular momentum of earth is constant explain how?

T=I A(alpha) , T = I * DALTA W (OMEGA)/DALTA T , SINCE I*W (OMEGA) = DALTA L(ANGLUAR MOMENTUM ) So, T = DALTA L / DALTA T , Thus , As rate of change of anguar momentum is equal to torque . so we know that earth revolves around sun while torque acting on it is zero . so here we may conclude that T=DALTA L / DALTA T , T= O => np… Read More

### Difference between scalar and vector?

Scalars have no direction. Examples are temperature, cost, speed, energy. Vectors have direction. Examples are velocity, torque, momentum.

### What moment of inertia does not depend on angular velocity?

An object that is rotating at constant angular velocity will remain rotating unless it is acted upon by an external torque.

### Is angular acceleration proportional or inversely proportional to torque?

Proportional. For linear movement, Newton's Second Law states that force = mass x acceleration. The equivalent for rotational movement is: torque = (moment of inertia) x (angular acceleration).

### Can you find torque by time in moment of inertia?

Comparing linear and circular motion we can see that moment of inertia represents mass and torque represents force. So the product change in the circular momentum per unit time is torque. Circular momentum is the product of moment of inertia and circular velocity.

### Can a torque be balanced by a single force?

The effect of a torque is to produce angular acceleration and that of the force is to produce linear acceleration. Since the effects of both torque and force are entirely different, therefore, a torque cannot be balanced by a single force.

### A motorcycle generates 500W of power The torque is 50.0 N m What is the angular velocity?

General formula used to calculate torque from power is torque=power*9.55/rpm so,using your data,50=500*9.55/N(rpm) i.e.,N(rpm)=95.5rpm. Angular Velocity=3.147*d*N/60 Unless the diameter is unknown its not possible to calculate the angular velocity.Once diameter is known it can substituted in the above mentioned formula.

### Why is Dc series motor used to start at heavy load?

due to its high initial torque value. the DC series motor is a Constant power motor, equal to the RATED POWER if it has at rated value of the U and I. Angular velocity=Rated Power/Torque, so Torque =Rated Power/Angular Velocity thus, in the start the velocity is zero or near, so, the Torque is infinit or very higt

### How to convert angular torque in to linear torquewith Example..?

Firstly could you be so kind to explain to me what "linear torque" is. I'm pretty confident that torque = force x radius at which that force is applied, thus the term linear torque cannot exist. Also torque is simply the angular version of force, I'm going to take a stab at this and assume that what you really want to know is how to convert torque to force. Since the equation defining torque is… Read More

### What is the constant of proportionality between torque and angular acceleration?

The rotating object's moment of inertia. Similar to Newton's Second Law, commonly quoted as "force = mass x acceleration", there is an equivalent law for rotational movement: "torque = moment of inertia x angular acceleration". The moment of inertia depends on the rotating object's mass and its exact shape - you can even have a different moment of inertia for the same shape, if the axis of rotation is changed. If you use SI units… Read More

### A 12 watt gear motor till how much force it can have a ability to rotate and its rpm is 10?

from power= torque*angular speed u can calculate torque and from torque u can find the force if the radius is known.

### Can a body be in equilibrium if it is revolving clockwise under the action of single torque?

No. If a single torque is applied on the object, it would have an angular acceleration, and will increase it's rotation speed.

### What is the equation of torqe?

The net torque is equal to moment of inertia times angular acceleration. (Στ=Ia)

### What is rotating concentric cylinder viscometer?

this unit basically consist of two concentric cylinders and a small intervening annular space contains the test fluids whose viscosity is to be determined. The outer cylinder is rotated at a constant angular speed. the viscous drag due to the liquid between the cylinders produce a torque on the inner cylinder, which would rotate if it was not restrained by an equal and opposite torque developed by torsion wire. as the spring torque is proportional… Read More

### How much torque is needed to run a 5 kw generator?

power=torque x speed p=txn 5000w= torque x angular speed if the speed of rotation is known, then from above formula we can find the minimum torque required to run the generator.