A block on table (weight 40 N) shown in figure is just on the wedge of slipping. Find the coefficient of static friction between the block and table (weight of the hanging mass is 60 N )
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a
0.35
b
0.46
c
0.866
d
0.54
answer is C.
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Detailed Solution
from the diagram at limiting equilibrium Tsin 300= μ 40---1 and Tcos 300 = 60 ----2dividing 1 by 2 tan 300 =23μ