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2) A merry-go-round has a radius of 1.75 m and a rotational inertia of 600 km-m2....

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Physics

2) A merry-go-round has a radius of 1.75 m and a rotationalinertia of 600 km-m2. A child pushes the merry-go-round with aconstant force of 102 N applied at the edge and parrallel to theedge. A frictional torque of 32 N.m acts at the axel of themerry-go-round.
a) What is the torque applied by the child?

b) What is the rotational acceleration of merry-go-round?
c) The child stops pushing after 18 seconds, if merry-go-round hadstarted from rest how long will it take for the merry-go-round tostop turning?

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