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2 cards from this section. Quick, good the night before a test.
Define torque.
Think about turning a doorknob.
What is moment of inertia?
Consider how mass affects motion.
What does torque do?
Think about how you open a door.
If I increase the moment of inertia of a body, what happens to the angular acceleration?
Consider how mass affects linear motion.
With a moment of inertia of 30 kg m², calculate the angular acceleration when a torque of 60 N m is applied.
Rearranging the torque formula is crucial.
A rotating disk with a radius of 0.5 m is applying a torque of 10 N m. Find the angular velocity after 4 seconds if it starts from rest.
Work through torque, moment of inertia, then kinematic equations.
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