Rotational Motion Universal Gravitation

The property of a rotating object to resist changes in its rotation is called...

• Angular Momentum

• Rotational Velocity

• Rotational Inertia

• Universal Gravitation

Which has greater linear (or tangential) speed, a horse near the outside rail of a merry-go-round or a horse near the inside rail?

• The inside horse has a greater linear speed.

• The outside horse has a greater linear speed.

• The horse have the same linear speeds but different angular speeds.

• Sometimes the inside one is faster and sometimes the outside one is.

When a car goes around a curve on a flat road at constant speed, what force causes it to follow the circular path?

• The normal force from the road

• The Force of Gravity

• The Friction Force from the road

• No force causes the car to do this because the car is traveling at constant speed and therefore has no acceleration.

When an object moves in uniform circular motion, the direction of its acceleration is

• in the same direction as its velocity vector.
• is directed toward the center of its circular path.
• in the opposite direction of its velocity vector.
• depends on the speed of the object.

A car travels counterclockwise with constant speed around the track shown to the right. Which of the vectors depicts the direction of the net force acting on the car at the point shown.

• A
• B
• C
• D

Tags

NGSS.HS-PS2-1

Which windmill will rotate more easily?

• A

• B

• Rotate the Same

• Neither will rotate at all.

Which windmill requires more torque to rotate?

• A

• B

• Need the same amount of torque.

• Neither one needs any torque to rotate.

If both windmills are given the same amount of torque, which one will have a greater rotational (or angular) velocity?

• A

• B

• Need the same amount of torque.

• Neither one needs any torque to rotate.

Which has more rotational inertia? (consider all objects have equal radius)

• Hollow sphere

• solid sphere

• disk

• cylinder

The movement pictured, occurs in which axes?

• Longitudinal

• Tranverse

• Medial

• Polar