A merry go round has a moment of inertia of 1000 kgm2 when, Ask an Expert

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A merry go round has a moment of inertia of 1000 kgm^2. When it is rotating at 2.62 rad/sec, the motor shut off. It then coasts to rest (uniform deceleration) due to friction in the bearings in 212 seconds.

How much energy was dissipated by friction in the bearings?

How large was the friction torque?

What power is required of the motor in order to keep the merry go round spinning at constant 2.62 rad/sec?

If you had been on the outer rim how fast were you moving when the motor shut off?

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