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48. The angular velocity of a body is

The angular velocity of a body is →w= 2^j+3^k+4^k and a torque →τ = ^j+2^k+3^k acts on it. The rotational power will be

(a)  20 W

(b)  15 W

(c)  √17 W

(d)  √17 W

Ans. a

(8)

5/5 - (1 vote)

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