Two blocks A and B are placed on a table and joined by a string. The l

1.	Two blocks A and B are placed on a table and joined by a string. The limiting friction for both blocks is F. The tension in the string is T. The forces of friction acting on the blocks are FA and FB. An external horizontal force P = 3F/2 acts on A, directed away from B.(a) FA = FB = T = 3F/4 (b) FA = F/2, FB = F, T = F (c) FA = FB = 3F/4, T = 0 (d) FA = F, FB = T = F/2
Answer» Correct Answer is: (d) F_A = F, F_B = T = F/2 Tension will appear in the string only when its length tends to change, i.e., when A tends to move. This can occur only when F_A reaches its limiting value.

Two blocks A and B are placed on a table and joined by a string. The limiting friction for both blocks is F. The tension in the string is T. The forces of friction acting on the blocks are FA and FB. An external horizontal force P = 3F/2 acts on A, directed away from B.(a) FA = FB = T = 3F/4 (b) FA = F/2, FB = F, T = F (c) FA = FB = 3F/4, T = 0 (d) FA = F, FB = T = F/2

Answer»

Correct Answer is: (d) F_A = F, F_B = T = F/2

Tension will appear in the string only when its length tends to change, i.e., when A tends to move. This can occur only when F_A reaches its limiting value.

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