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- 1. Multiple Choice
If the net torque on an object is 0, then the object will
not rotate or rotate at a constant angular velocity.
rotate with a constant angular acceleration.
not rotate or move in a straight line.
not move in a straight line.
- 2. Multiple Choice
If a net torque is applied to an object, that object will experience which of the following? (A net torque means a net torque that is NOT 0!)
A constant angular speed
A constant moment of inertia
An angular acceleration
An increasing moment of inertia
- 3. Multiple Choice
Which of the following statements is correct?
The closer the force is to the axis of rotation, the easier it is to rotate the object.
The closer the force is to the axis of rotation, the more torque that is produced.
The farther the force is to the axis of rotation, the less torque that is produced.
The farther the force is to the axis of rotation, the more torque that is produced.
- 4. Multiple Choice
At what angle should the force be applied to a wrench to produce the maximum torque?
00 to the handle
900 to the handle
1800 to the handle
3600 to the handle
- 5. Multiple Choice
Suppose a doorknob is placed at the center of a door. Compared with a door whose knob is located at the edge, what amount of force must be applied to this door to produce the torque needed to open it?
1/4 as much
1/2 as much
Twice as much
Four times as much
- 6. Multiple Choice
If you want to open a swinging door with the least amount of force, where should you push on the door?
As far from the hinges as possible
Close to the hinges
In the middle
It does not matter where you push
- 7. Multiple Choice
If you cannot exert enough force to loosen a bolt with a wrench, which of the following should you do?
Exert a force on the wrench closer o the bolt
Tie a rope to the end of the wrench and pull
Use a wrench with a longer handle
Use a wrench with a shorter handle
- 8. Multiple Choice
At which point along a claw hammer is the center of mass best located?
In the middle of the handle
Closer to the end of the handle without the head
Closer to the head end of the handle
- 9. Multiple Choice
Which of the following affects the total kinetic energy of a football thrown with a spinning motion?
The ball's angular speed only
The ball's linear speed only
Both the linear and angular speeds
Neither the linear nor the angular speeds
- 10. Multiple Choice
What is the point at which all of the mass of the body and be considered to be concentrated?
Center of Mass
Moment of Inertia
Rotational Equilibrium
Torque
- 11. Multiple Choice
A point mass and a solid cylinder have the same mass and radius. How much more rotational kinetic energy does the point mass have than the solid cylinder if they are both spinning about their symmetry axes with the same angular speed?
Half as much
They have he same amount of rotational kinetic energy
Twice as much
Four times as much
- 12. Multiple Choice
What must be true in order for an object to be in both translational and rotational equilibrium?
The acceleration is zero.
The angular acceleration is zero.
The acceleration and angular acceleration are zero.
The velocity and angular velocity are zero.
- 13. Multiple Choice
What is defined as a twist or turn, which causes an angular acceleration?
Angular Momentum
Center of Mass
Force
Torque
- 14. Multiple Choice
What is the measure of the resistance of an object to change its rotational motion?
Center of Mass
Moment of Inertia
Rotational Equilibrium
Torque
- 15. Multiple Choice
Which of the following does NOT affect an objects moment of inertia?
Mass
Size
Shape
Way it is rotating
Rotational Velocity
- 16. Multiple Choice
An ice skater is spinning in a circle with his arms extended out. He then brings his arms in, what happens to his rotational velocity?
It increases
It decreases
It stays the same
He stops spinning immediately
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