Sarthaks Test
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A uniform cube of mass m and side a is placed on a frictionless horizontal surface. A vertical force F is applied to the edge as shown in Fig. 7.8. Match the following (most appropriate choice):

(a) mg/4 <F <mg /2      (i) Cube will move up.

(b) F > mg/2                 (ii) Cube will not exhibit motion.

(c) F > mg                    (iii) Cube will begin to rotate and slip at A.

(d) F = mg/4                (iv) Normal reaction effectively at a/3 from A, no motion.

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(a) ii, 

(b) iii, 

(c) i, 

(d) iv

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