12. Rotational Kinematics
Equations of Rotational Motion
5:56 minutes
Problem 12a
Textbook Question
Textbook QuestionAn 18-cm-long bicycle crank arm, with a pedal at one end, is attached to a 20-cm-diameter sprocket, the toothed disk around which the chain moves. A cyclist riding this bike increases her pedaling rate from 60 rpm to 90 rpm in 10 s. What is the tangential acceleration of a tooth on the sprocket?
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