Question
To maintain a rotor at a uniform angular speed of $100\, rad\, s^{-1}$, an engine needs to transmit torque of $100\, Nm$. The power of the engine is
✓
Answer
Power of the engine $\mathrm{p}=\tau \omega$
$\therefore$ $\mathrm{p}=(100 \mathrm{Nm})\left(100 \mathrm{rad} \mathrm{s}^{-1}\right)$
$=10 \mathrm{kW}$
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