Answer to Question #200647 in Mechanics | Relativity for Master j

Question

The flywheel of an electric motor accelerates from rest to a speed of 1000 rev/min in 10 seconds. The motor was then allowed to run for 1 minutes. The power was then switched off and the flywheel turns a further 400 rev before coming to rest.

i. Sketch the ω-t graph for the motion of the flywheel.

ii. Calculate the initial acceleration

iii. Find the time taken for the flywheel to come to rest after the power was switched off.

Answer 1

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