Question

Two blocks of mass 4 kg and 2 kg are connected by a heavy string and placed on rough horizontal plane. The 2 kg block is pulled with a constant force to the right. The coefficient of friction between the blocks and the ground is 0.4. What is the value of so that tension in the string is constant throughout during the motion of the blocks: $(g=10m/s^2)$

• A. 24 N
• B. 30 N
• C. 50 N
• D. 60 N

Answer 1

The correct option is A

24 N

For a = 0, tension is constant throughout.

$T=4\mu g=16NSo,F=T+2\mu g=24N$