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What is the torque of the force F vector =(2iˆ-3jˆ+4kˆ)Nacting at the pt. r vector = (3iˆ+2jˆ+ 3kˆ)M about the origin

(a) -17i^ˆ+6j^ˆ+13k^ˆ

(b) -6i^ˆ+6j^ˆ-12k^ˆ

(c) 17i^ˆ-6j^ˆ-13k^ˆ

(d) 6i^ˆ-6j^ˆ+12k^ˆ

Ans. c

(4)

5/5 - (2 votes)

PrevPreviousAssertion : A kinetic energy of a body is quadrupled, when its velocity is doubled. Reason : Kinetic energy is proportional to square of velocity

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