a system shown in fig, blocks 2&3 kg are at rest.coefficient of friction getween 2 kg & incline is
(a)2/?3 (b)1/2
(c)1/3 (d)can't be calculated
ANSWER IS (d)can't be calculated WHY???????
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my answer was
after resolving & equating x & y components along the plane,
we have f + T = mg sin30
FF m = 2/?3 i.e.(a)