
Angular Acceleration, Rotational Inertia, and Torque
Flashcard
•
Physics
•
10th - 12th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What are the rotational equivalents of distance, velocity, and acceleration?
Back
θ (angle), ω (angular velocity), α (angular acceleration)
2.
FLASHCARD QUESTION
Front
Which solid ball reaches the bottom of an incline first: a ball of radius R and mass M or a ball of radius 2R and mass 8M?
Back
The small sphere (radius R) arrives first.
3.
FLASHCARD QUESTION
Front
How can you achieve maximum torque?
Back
By using a longer lever arm and applying more force perpendicularly.
4.
FLASHCARD QUESTION
Front
If two wheels are fixed to each other and four forces are exerted tangentially, what direction will they rotate if the net torque is clockwise?
Back
The wheels will rotate clockwise.
5.
FLASHCARD QUESTION
Front
What is the magnitude of the net torque if two wheels are fixed to each other and four forces are exerted tangentially?
Back
4FR (where F is the force and R is the radius).
6.
FLASHCARD QUESTION
Front
Define angular acceleration.
Back
Angular acceleration (α) is the rate of change of angular velocity over time.
7.
FLASHCARD QUESTION
Front
What is rotational inertia?
Back
Rotational inertia (I) is the resistance of an object to changes in its rotational motion, depending on the mass distribution relative to the axis of rotation.
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