A) 3 N
B) 2 N
C) 8 N
D) 0
Correct Answer: D
Solution :
As weight \[=0.3\times 10=3\,N\] typing to slide the two block system, but\[{{f}_{\max }}=0.5\times 1\times 10+0.5\times 1\times 10=10\,N\] Hence, the system is in equilibrium and friction of block B is sufficient to balance the weight, hence tension between A and B is zero.
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