A 400gram package lying on a horizontal surface is attached to a horizontal string which passes over a smooth pulley. When a mass of 200grams is attached to the other end of the string, the package is on the point of moving. Find , the coefficient of friction. (consider g=10 m/s2)
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Newton's Second Law:
Consider a knife box that is kept on a long table and some forces are acting on it at the same time. In this example, the net force acting on the knife box will be equal to the product of its mass and the acceleration gained by it.
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