Figure shows two blocks A and B pushed against the smooth wall with the force F. The wall is smooth but the surfaces in contact of A and B are rough. Which of the following is true for the system of blocks?

Question

Figure shows two blocks A and B pushed against the smooth wall with the force F. The wall is smooth but the surfaces in contact of A and B are rough. Which of the following is true for the system of blocks? (A) The system can not be in equilibrium (B) F should be equal to weight of A and B (C) F should be less than the weight of A and B (D) F should be more than the weight of A and B

Tardigrade Admin · Accepted Answer

Because the wall is smooth, so whatever may bethe applied force, the system will move downdue to its own weight. Hence, the system cannotbe in equilibrium.

Q. Figure shows two blocks A and B pushed against the smooth wall with the force F. The wall is smooth but the surfaces in contact of A and B are rough. Which of the following is true for the system of blocks?

The system can not be in equilibrium

F should be equal to weight of A and B

F should be less than the weight of A and B

F should be more than the weight of A and B

Because the wall is smooth, so whatever may bethe applied force, the system will move downdue to its own weight. Hence, the system cannotbe in equilibrium.