Rotational Motion Facts Review

Front

What variable links linear and rotational motion?

Back

Radius

Front

What causes angular acceleration in a rotating system?

Back

Net torque

Front

How is angular acceleration represented mathematically?

Back

α = τ/I, where τ is net torque and I is moment of inertia.

Front

What is the formula for torque provided by a force?

Back

τ = Fd⊥, where d⊥ is the lever arm.

Front

What is the moment of inertia of a system?

Back

It is the sum of the products of each object's mass and the square of its distance from the axis of rotation.

Front

What happens to angular acceleration if the moment of inertia increases while net torque remains constant?

Back

Angular acceleration decreases.

Front

What is the relationship between torque and angular acceleration?

Back

Torque is directly proportional to angular acceleration.

Front

What is a lever arm in the context of torque?

Back

The perpendicular distance from the axis of rotation to the line of action of the force.

Front

How do you calculate the total moment of inertia for multiple objects?

Back

Sum the individual moments of inertia of all objects in the system.

Front

What effect does mass have on rotational inertia?

Back

Greater mass increases the moment of inertia, making it harder to change the rotational motion.