A dad pushes tangentially on a small hand-driven merry-go-round
and is able to accelerate it from...
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Physics
A dad pushes tangentially on a small hand-driven merry-go-roundand is able to accelerate it from rest to a frequency of 15 rpm in11.0 s . Assume the merry-go-round is a uniform disk of radius 2.5m and has a mass of 560 kg, and two children (each with a mass of25 kg) sit opposite each other on the edge.
Part A
Calculate the torque required to produce the acceleration,neglecting frictional torque.
Express your answer to two significant figures and include theappropriate units.
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Part B
What force is required at the edge?
Answer & Explanation
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4.4 Ratings (763 Votes)
Time period T 11 secInitial angular speed of the merrygoround 1 0 radsRotational speed of the merrygoround after 11 sec N2 15 rpmAngular speed of the merrygoround after 11 sec 22
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