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## Homework Statement

A wheel with rotational inertia I is mounted on a fixed motionless axle. The singular speed w of the wheel is increased from 0 to Wf in a time interval T.

Net torque=IWf/T

What is the average power input to the wheel during this time interval?

## Homework Equations

P=torque*angular velocity

## The Attempt at a Solution

P=(IWf/T)*Wf=(IWf^2/T)

This isn't right though, what am I doing wrong?