Merry-go-round Flr for maximum a Consider the father pushing a playground merry-go-round as pictured above. He exerts a force of 302N on the 50.0-kg merry-go-round, which has a 1.48m radius. Consider the merry-go- round itself to be a uniform disk with negligible retarding friction. a) How long does it take the father to give the merry-go-round and his 18.0-kg child sitting at the outer edge an angular velocity of 1.6 rad/s? b) How many revolutions must he go through to generate this velocity? rev c) If he exerts a slowing force of the same magnitude, how long would it take him to stop them?

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Chapter1: Units, Trigonometry. And Vectors
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Merry-go-round
Fir for
maximum a
Consider the father pushing a playground merry-go-round as pictured above. He exerts a force
of 302N on the 50.0-kg merry-go-round, which has a 1.48m radius. Consider the merry-go-
round itself to be a uniform disk with negligible retarding friction.
a) How long does it take the father to give the merry-go-round and his 18.0-kg child sitting at the
outer edge an angular velocity of 1.6 rad/s?
b) How many revolutions must he go through to generate this velocity?
rev
c) If he exerts a slowing force of the same magnitude, how long would it take him to stop them?
Transcribed Image Text:Merry-go-round Fir for maximum a Consider the father pushing a playground merry-go-round as pictured above. He exerts a force of 302N on the 50.0-kg merry-go-round, which has a 1.48m radius. Consider the merry-go- round itself to be a uniform disk with negligible retarding friction. a) How long does it take the father to give the merry-go-round and his 18.0-kg child sitting at the outer edge an angular velocity of 1.6 rad/s? b) How many revolutions must he go through to generate this velocity? rev c) If he exerts a slowing force of the same magnitude, how long would it take him to stop them?
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