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Question

A body of mass M is resting on a rough horizontal plane surface, the coefficient of friction being equal to μ. At t=0, a horizontal force F=F0t starts acting on it, where F0 is a constant. Find the time T at which the motion starts?

A
μMg/F0
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B
Mg/μF0
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C
μF0/Mg
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D
None of these
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Solution

The correct option is A μMg/F0
When the value of F will becomes equal to the limiting friction then it will get into motion
so
F0t=μMg
t=μMg/F0

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