A block of mass m is stationary on a horizontal surface. It is connected with a string which has no tension. The coefficient of friction between the block and surface is m. Then, the frictional force between the block and surface is:
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a
zero
b
μ mg
c
mgμ
d
none of these
answer is A.
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Detailed Solution
fs = μ mg, F < fs. If applied force is less than limiting friction force then frictional force is equal to the applied force.f = F