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Question

In the figure shown find the acceleration of 2 kg body and also take μs=0.5, μk=0.4[Take g=10 m/s2]


A
1.5 m/s2
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B
1 m/s2
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C
0.5 m/s2
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D
0 m/s2
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Solution

The correct option is D 0 m/s2
FBD of both the blocks

The maximum frictional force fmax=μsN=0.5×2×10=10 N
Tension in the string will be T=1×g=10 N
As fmax=T hence the frictional force is sufficient enough to hold the system in equilibrium. So the sysem is in rest (a=0)

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