Suppose a teenager puts her bicycle on its back and starts the rear wheel spinning from rest to a final angular velocity of 250 rpm in 5.00 s. (a) calculate the angular acceleration in rad/s2. (b) if she now slams on the brakes, causing an angular acceleration of –87.3rad/s2, how long does it take the wheel to stop

a) angular acceleration, a = 5.24rad/s^2

b) time taken for the wheel to stop, ∆t = 0.30s

Explanation:

All shown in the attachment.

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