1. If a disk rolls smoothly down a ramp, what is the direction of the frictional

ID: 1571777 • Letter: 1

Question

1. If a disk rolls smoothly down a ramp, what is the direction of the frictional force acting on the disk?

a. UP the rampe b. Down the Ramp

2. How is torque related to angular momentum?

a. Torque is equal to the integral of the angular momentum with respect to time.

b. Torque is equal to the derivative of the angular momentum with respect to time

3. Can the angular momentum of a rigid body change if there is no net torque acting on the body?

a. Yes b. No

4. When is the angular momentum of a system conserved?

a. when the net torque on the system is increasing

b.when the net torque on the system is decreasing

c. when the net torque on the system is zero

5. If we increase a gyroscope’s spin rate (the angular speed of the spinning), what happens to the precession rate?
a. increase

b. decrease.

c. remains the same

a. when the net torque on the system is increasing

1.If a disk rolls smoothly down a ramp, what is the direction of the frictional force acting on the disk?

a. UP the rampe

2. How is torque related to angular momentum?

b. Torque is equal to the derivative of the angular momentum with respect to time

3. Can the angular momentum of a rigid body change if there is no net torque acting on the body?

b. No

4. When is the angular momentum of a system conserved?

when the net torque on the system is zero

If we increase a gyroscope’s spin rate (the angular speed of the spinning), what happens to the precession rate?

remains the same

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