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A merry-go-round at a playground is rotating at 6.0 rev/min. Four children jump on and increase...

  1. A merry-go-round at a playground is rotating at 6.0 rev/min. Four children jump on and increase the moment of inertia of the merry-go-round by 30%.

What is the new rotation rate? What torque must be applied by the merry-go-round’s motor in order to restore the initial rotation rate within 30 seconds or 0.5 minutes?

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