You want the static friction coefficient in this case. It tells you the mount of friction that will start the sliding pricess. Call the coefficient Us.
40 = Weight*Us
Us = 40N/200N = 0.20
A block of weight 200N rest on a rough horizontal table when the block just begin slip the pulling force found to be 40N,what coefficient of friction between the two surfaces
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So happy
This is rubbish
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