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A uniform cube of side a and mass m rests on a rough horizontal table. A horizontal force F is applied normal to one of the faces at a point that is directly above the centre of the face, at a height 3a/4 above the base. The minimum value of F for which the cube begins to tilt about the edge is (assume that the cube does not slide)

(a) mg/4

(b) 2mg/3

(c) 3mg/4

(d) mg

Ans. b

(5)

5/5 - (1 vote)

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