AP Physics 1 · Topic 6.3
Angular Momentum and Angular Impulse Practice
Part of Energy and Momentum of Rotating Systems.(TOP-6.C)
Practice questions
7
Sample questions
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Sample 1difficulty 1/5
A flywheel of moment of inertia spins at . What is its angular momentum?
- A
- B
- Ccheck_circle
- D
Why
.
- A
Sample 2difficulty 1/5
Angular momentum has units
- A
- Bcheck_circle
- C
- D
Why
(rad is dimensionless).
- A
Sample 3difficulty 2/5
A spinning disk on the floor is viewed from above and rotates clockwise. Its angular-momentum vector points
- A
Tangentially
- B
Up
- Ccheck_circle
Down
- D
Toward the center
Why
Right-hand rule: fingers curl with rotation, thumb gives . CW from above → down.
- A
Sample 4difficulty 2/5
A particle moves in a horizontal circle of radius at . Its angular momentum about the center is
- A
- B
- C
- Dcheck_circle
Why
.
- A
Sample 5difficulty 2/5
A disk spins counterclockwise when viewed from above. By the right-hand rule, the direction of its angular-momentum vector is
- Acheck_circle
Upward
- B
Downward
- C
Counterclockwise along the rim
- D
Clockwise along the rim
Why
Curl the right-hand fingers along the rotation direction; the thumb points along . For CCW-viewed-from-above, the thumb points <strong>up</strong>.
- A