AP Physics 1 - Torque & Rotational Motion Review (Unit 7)

Front

What is torque?

Back

Torque is a measure of the rotational force applied to an object, calculated as the product of the force and the distance from the pivot point (fulcrum) to the point of force application.

Front

What is the formula for torque?

Back

Torque (τ) = Force (F) × Distance (r) × sin(θ), where θ is the angle between the force vector and the lever arm.

Front

What is the role of the fulcrum in torque?

Back

The fulcrum is the pivot point around which the object rotates. It is crucial for determining the effectiveness of the applied force in creating torque.

Front

What does it mean if the net torque is zero?

Back

If the net torque is zero, the object is in rotational equilibrium, meaning it is either at rest or rotating at a constant angular velocity.

Front

What is angular momentum?

Back

Angular momentum is the quantity of rotation of an object, dependent on its mass, shape, and velocity, and is given by the formula L = Iω, where L is angular momentum, I is the moment of inertia, and ω is angular velocity.

Front

How does the distance from the fulcrum affect torque?

Back

The farther the distance from the fulcrum to the point of force application, the greater the torque produced by the same amount of force.

Front

What is the difference between linear and angular acceleration?

Back

Linear acceleration refers to the rate of change of velocity of an object in a straight line, while angular acceleration refers to the rate of change of angular velocity of a rotating object.

Front

What is the relationship between angular velocity and linear velocity?

Back

Linear velocity (v) is related to angular velocity (ω) by the formula v = rω, where r is the radius or distance from the axis of rotation.

Front

What is the moment of inertia?

Back

The moment of inertia (I) is a measure of an object's resistance to changes in its rotational motion, dependent on the mass distribution relative to the axis of rotation.

Front

What is the principle of conservation of angular momentum?

Back

The principle states that if no external torque acts on a system, the total angular momentum of that system remains constant.