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The angular velocity of a body is vec(om...

The angular velocity of a body is `vec(omega)=2hati+3hatj+4hatk` and a torque `vec(tau)=hati+2hatj+3hatk` acts on it. The rotational power will be

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Verified by Experts

Power(P)=`vecrdot vecomega=(i+2hatj+3hatk).(2hati+3hatj+4hatk)=2+6+12=20W`.
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