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- 1. Multiple Choice
If no external torque acts on a body, its angular velocity remains conserved.
True
False
- 2. Multiple Choice
The easiest way to open a heavy door is by applying the force
Near the hinges
In the middle of the door
At the edge of the door far from the hinges
At the top of the door
- 3. Multiple Choice
What does the symbol Δω mean?
angular acceleration
angular velocity
change in angular acceleration
change in angular velocity
- 4. Multiple Choice
The angle of rotation is
ratio of the radius to arc length
product of arc length, pi, and radius
ratio of the arc length to radius
product of diameter and arc length
- 5. Multiple Choice
"A body in motion at constant angular velocity will continue in motion at the same angular velocity, unless acted upon by some unbalanced external torque."
1st Law of Rotational Motion
2nd Law of Rotational Motion
3rd Law of Rotational Motion
Zeroth Law of Rotational Motion
- 6. Multiple Choice
Why are you more stable when riding a bicycle at a faster speed?
You have more mass
The wheels have angular momentum
It's not easier to ride at a faster speed
The bike has more momentum
- 7. Multiple Choice
A person sits on a freely spinning lab stool that has no friction in its axle. When this person extends her arms,
her moment of inertia increases and her angular speed decreases.
her moment of inertia decreases and her angular speed increases.
her moment of inertia increases and her angular speed increases
her moment of inertia increases and her angular speed remains the same.
- 8. Multiple Choice
A solid sphere rolling without slipping down an incline has:
rotational kinetic energy.
constant angular momentum.
zero external torques
translational kinetic energy
- 9. Multiple Choice
Static equilibrium occurs when an object is
rotating.
translating.
at rest.
rotating and translating.
- 10. Multiple Choice
Does a bridge anchored resting on two pillars have any torque?
Yes, but it will soon break because of the torque
No, it isn't moving
No, Bridges can't have torque
Yes, but it is at equilibrium
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