Question

In the diagram shown in figure, all pulleys are smooth and mass less and strings are light. Match the blocks in column-I with their motion in column-II

Column I	Column II
(P) 1 kg block (Q) 2 kg block (R) 3 kg block (S) 4 kg block	(1) will remain stationary (2) will move down (3) will move up (4) has acceleration 4 m/s2

(A) P-1, Q-1, R-1,S-3 

(B) P-3, Q-1, R-2,S-2 

(C) P-2, Q-4, R-3,S-1 

(D) P-1, Q-4, R-2,S-2

Answer 1

Correct option (B) P-3, Q-1, R-2,S-2

Explanation:

Since, the pulleys are smooth, net force on each pulley should be zero. With this concept, tensions on all strings are shown below,