A 3 kg box rests on a horizontal table. It is attached to a 2 kg box via a pulley. The 2 kg box hangs over the edge of the table. The 2 kg box is 2 meters from the ground. a) What is the minimum coefficient of static friction such that the objects remain at rest. b) If the coefficient of static friction is less than that in part (a) and the coefficient of kinetic friction between the box and the table is 0.30, find the time the 2 kg mass falls the 2 meters to the floor. Assume the system starts from rest.

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Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: