# Torque, power and friction

An electric motor can accelerate a Ferris wheel of moment of inertia I = 22000 kgm^2 from rest to 11.0 rev/min in 12.0 s. When the motor is turned off, friction causes the wheel to slow down from 11.0 to 9.0 rev/min in 10.0 s.

Determine the torque generated by the motor to bring the wheel to 11.0 rev/min______Nm

Determine the power that would be needed to maintain this rotational speed. ____W

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#### Solution Summary

The 3 pages solution includes derivation and explanations of all needed equations to solve the problem.

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