A uniform cube of mass m and side a is placed on a frictionless horizo

1.	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.
Answer» (a) ii, (b) iii, (c) i, (d) iv

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.

Answer»

(a) ii,

(b) iii,

(d) iv