A merry-go-round of radius r= 2.0 m and moment of 500 kg.m^2 rotates about a frictionless...
A merry-go-round of radius r= 2.0 m and moment of 500 kg.m^2 rotates about a frictionless pivot. It makes one revolution every 5 seconds. A child of mass 25kg walks from the center (r=0) to the edge (r=R).
How long does it take the merry-go-round to make one revolution when the child is standing at the edge? (The moment of inertia of a circular disc is I=1/2mR^2)
Is this process elastic? (That is, is the kinetic energy the same when the child is at r=0 and r+R?) Explain your answer
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A merry-go-round of radius r= 2.0 m and moment of 500 kg.m^2
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