Question

A motor keep a Ferris wheel (with moment of inertia 6.8 × 107 kg · m 2 ) rotating at 12 rev/hr. When the motor is turned off, the wheel slows down (because of friction) to 9.6 rev/hr in 17 s. What was the power of the motor that kept the wheel rotating at 12 rev/hr despite friction? Answer in units of W.

Answer 1

Power of the motor that kept the wheel rotating at 12 rev/hr despite friction is 342.79W.

Step-by-step explanation:

Pls refer to the attached file. The explanation is long to pen down here.