The system shown in Figure consists of a light, inextensible cord, light, frictionless pulleys, and blocks of m1 = 7.75 kg and m2 = 2.40kg masses. Notice that the block with the mass m2 is attached to one of the pulleys. The system is initially held at rest so that the blocks are at the same height above the ground. The blocks are then released at time t = 0. Find the displacement y1 (displacement up is positive, down is negative) of the block with the mass m1 at the time t-7.94 seconds. Submit your answer in m using 3 significant figures. az m m2

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Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.