AP Physics 1 Torque & Rotational Motion Multiple Choice

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 application of the force.

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 does it mean for an object to be in rotational equilibrium?

Back

An object is in rotational equilibrium when the sum of all torques acting on it is zero, resulting in no angular acceleration.

Front

What is angular momentum?

Back

Angular momentum (L) is the rotational equivalent of linear momentum, defined as L = Iω, where I is the moment of inertia and ω is the angular velocity.

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 rotation, depending on the mass distribution relative to the axis of rotation.

Front

What is the relationship between torque and angular acceleration?

Back

Torque is directly proportional to angular acceleration (α) and is given by the equation τ = Iα, where I is the moment of inertia.

Front

What is a fulcrum?

Back

A fulcrum is the pivot point around which a lever rotates, and it is crucial in determining the torque produced by a force.

Front

What is the difference between tangential speed and angular speed?

Back

Tangential speed is the linear speed of a point on a rotating object, while angular speed is the rate of rotation about an axis, measured in radians per second.

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 the system remains constant.

Front

What is a rigid body?

Back

A rigid body is an idealized solid object in which the distance between any two points remains constant, regardless of external forces.