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Newtons Laws of Motion
The three laws proposed by Sir Isaac Newton to define the concept of a force and describe motion, used as the basis of classical mechanics.
1,508 Questions
Why must designers and engineers calculate forces acting on bodies and structures?
Designers and engineers calculate forces to ensure that structures and bodies can support the loads they will be subjected to. This helps in determining the material requirements and design options to ensure safety and structural integrity. Calculating forces also helps in avoiding failure and optimizing performance of the designed system.
What is newtons first law of motion summarized?
Newton's first law of motion states that an object at rest will remain at rest, and an object in motion will remain in motion at a constant velocity unless acted upon by an external force. This is also known as the law of inertia.
What type of flight can Newton's First Law best explain-explain your answer?
Newton's First Law best explains why an object at rest stays at rest or an object in motion stays in motion at a constant velocity unless acted upon by an external force. This principle is commonly used to explain the motion of airplanes in straight and level flight, as they maintain their speed and direction unless a pilot or external force changes their trajectory.
What is the effect of less friction on an object?
Less friction on an object results in smoother and faster movement. It reduces the force needed to overcome resistance, allowing the object to move more efficiently and with less energy loss due to heat or wear.
No, Newton's second law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass (F = ma). If there is an unbalanced force acting on an object, it will accelerate, not move at a constant velocity.
Does escape velocity depend upon height from which it is projected?
Yes, it would. That's one reason why some artificial satellites were tossed into
orbit after being carried up aboard the space shuttle.
The reason is because escape velocity from Earth depends on Earth's gravity,
which in turn depends on the distance from the Earth's center. The higher you
go, the farther you are from the center of the planet, the less gravitational
force there is between you and the Earth, and the smaller the escape velocity
thus becomes.
Can you please tell me that what is newton's third law of motion?
In the 17th century a famous British physicist, Sir Issac Newton , discovered the 3 laws of accelerated motion.
The first law , states," A body continues to stay at rest or in uniform motion along a straight line unless acted upon by an external unbalanced force."this law is also called as the law of Inertia. It clearly states that a body will not move without any external force acts upon it
What happens if you run out of gas in space?
You will travel in the same direction, at the same speed for eternity unless your vehicle is acted upon by some other force such as gravity or an atmosphere (Newton's Second Law). There is no air in space, and therefore no friction to slow the vehicle down and without fuel, you cannot change the direction.
If you are ignoring energy lost due to friction, the total mechanical energy will be the same after it has traveled 1 meter as when it was dropped. This means the easiest way to solve the problem is to find the mechanical energy at the beginning, when the ball is at rest and all of its mechanical energy is gravitational potential energy. Gravitational potential energy equals mass*g*height. Since mass*g equals weight, we can just multiply 10N by 4m, making the total mechanical energy 40J.
After it has traveled 1 meter, some of the gravitational potential energy has been converted into kinetic energy. The gravitational potential energy is just the weight of 10N multiplied by the height of 3m, or 30J. To find the kinetic energy, we need to find velocity2, which equals 2 times acceleration (g) times displacement (1m) when the initial velocity is 0. We also need the mass, which is weight (10N) divided by g. Kinetic energy equals (1/2)*mass*velocity2, so we get (1/2)*10N÷g*2*g*1m, which equals 10J, so the total mechanical energy is still 40J.
Why are the forces balanced on an object falling at terminal velocity?
In a vaccum, different objects have no terminal velocity... the further they fall, the faster they go. So, "air drag" is what provides differing terminal velocities, and the object's shape and weight distribution controls that drag.
A hill itself is not an unbalanced force, but it can provide a force due to gravity that acts on objects. If an object is on a hill, gravity is pulling it downward, creating a force that may result in unbalanced forces in certain situations.
When an object is thrown straight up at the highest point the downward velocity is?
A rock has the same constant acceleration from the moment it leaves your hand
until the moment it hits the ground. It doesn't matter whether you dropped it or
threw it, or in what direction it left you.
The acceleration is 9.8 meters (32.2 feet) per second2 directed downwards.
That's the acceleration of gravity on earth.
As you asked, let's say you tossed it straight upwards. A tiny instant before it
reaches the exact top, it has a small upward speed. A tiny instant after it passes
the exact top, it has a small downward speed. During that tiny space of time, its
upward speed decreases and its downward speed increases. That's a downward
acceleration in anybody's book.
What hapPens to the net force of the object if it is at rest?
If an object is at rest, the net force acting on it is balanced - meaning the forces pushing in one direction are equal to the forces pushing in the opposite direction. This results in a net force of zero, keeping the object stationary.
What is the difference between translational and rotational motion?
Translational motion . . .
The object's center of mass winds up at a different location
compared to where it was when the motion began.
Rotational motion . . .
The location of the object's center of mass doesn't change, but
the object turns, spins, whirls, tumbles, or rotates around it.
This is an example of Newton's second law of motion, which states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. In this case, increasing the force applied to the ball increases its acceleration because the force causes a greater change in velocity over time.
How can the sport of curling be used to illustrate newtons first law of motion?
In curling, a stone will remain at rest or in motion in a straight line unless acted upon by an external force - illustrating Newton's first law of motion. The stone will continue moving in a straight line due to inertia until the sweepers apply force to change its trajectory. This demonstrates how an object resists changes to its motion unless an external force is applied.
What does newtons first law of motion state about objects at rest and objects in motion?
An object in motion will not change its motion unless acted on by an external force.
This applies to zero motion also.
When the net force is zero the forces acting on an object are?
They are either non-existent or else balanced.
What does the s stand for in m divided by s2?
The "s" in m/s^2 stands for seconds, representing the unit of time in the expression for acceleration.
Is the rate of your velocity change your acceleration?
Yes, the rate of change of velocity is equal to acceleration. This means that if an object's velocity is changing, it is experiencing acceleration, either by speeding up, slowing down, or changing direction.
What is the net force when you combine a force of 7 N North with a froce of 5 N South?
7 N North is up and 5 N South is down; 7 -5 = 2 N North
Does an isolated system have net force acting on it?
Even if it does the net force acting on it should be zero. That's why it's called isolated.
Is sitting in a chair an example of newtons first law of motion?
Yes, sitting in a chair is an example of Newton's first law of motion, also known as the law of inertia. An object at rest will remain at rest unless acted upon by an external force. Your body remains stationary in the chair until you decide to move or an external force, like someone pushing you, acts upon you.
How do you calculate the friction in a pulley?
To calculate the friction in a pulley, you can use the formula: Friction = µ * N, where µ is the coefficient of friction and N is the normal force acting on the pulley. The coefficient of friction represents how "rough" the surfaces in contact are. By multiplying the coefficient of friction with the normal force, you can determine the amount of friction in the pulley system.
What is value of gravitational acceleration?
The value of gravitational acceleration on Earth is approximately 9.81 m/s^2.
