AP Physics 1: Rotational Dynamics Review

What is the most effective angle to apply force on a door to maximize torque?

• 90 degrees

• 45 degrees

• 0 degrees

• 180 degrees

In the rotational form of Newton's second law, what does the symbol 'I' represent?

• Inertia

• Intensity

• Impulse

• Moment of Inertia

What are the dimensions of moment of inertia?

• Joules

• Newton times meters

• Kilograms times meters squared

• Kilograms times meters

When an object rolls down an incline without slipping, what type of energy does it gain?

• Only potential energy

• Both translational and rotational kinetic energy

• Only rotational kinetic energy

• Only translational kinetic energy

How does a larger moment of inertia affect an object's motion down a hill?

• It takes more time to reach the bottom

• It has more translational kinetic energy

• It reaches the bottom faster

• It has a higher linear velocity

What is the relationship between angular momentum and angular velocity?

• Angular momentum is independent of angular velocity

• Angular momentum equals force times angular velocity

• Angular momentum equals moment of inertia times angular velocity

• Angular momentum equals mass times angular velocity

What are the dimensions of angular impulse?

• Newton times meters times seconds

• Newton times meters

• Kilograms times meters squared per second

• Joules per second