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29. A force of 

(2^i-4^j+2^k)N acts at a point  metre(3^i +2^j-4^k)  from the origin. The magnitude of torque is

(a) Zero

(b)  24.4 N-m

(c)   0.244 N-m

(d)  2.444 N-m

Ans. b

(7)

5/5 - (1 vote)

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