1.

A block weighing 10kg is at rest on a horizontal table. The coefficient of static friction between the block and the table is 0.5. If a force acts downward at 60^(@) with the horizontal, how large can it be without causing the block to move ? (g=10ms^(-2))

Answer»

346 N
446 N
746 N
846 N

Solution :`F COS THETA=f, f=mu_(s)N, N=mg+F sin theta`


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