Question: 2. Two blocks are connected by alight string passing over alight, frictionless pulley as shown. The masses of the two blocks are: m = 7.8

2. Two blocks are connected by alight string passing over alight, frictionless pulley as shown. The masses of the two blocks are: m = 7.8 kg, m2 = 2.2 kg. The 2.2-kg block initially rests on the oor, while the 7.8-kg block is released from rest at a point h = 6.0 m above the oor. Choose the oor to be reference level for the calculation of the gravitational potential energy. (a) Determine the total initial kinetic energy and the total initial potential energy (in Joules) of the blocks (20 pts) KEi= PEi = (b) Determine the total potential energy (in Joules) of the blocks at the moment when they pass each other. (15 pts) PEf = (c) Determine the speed (in m/s) of the blocks at the moment when they pass each other. (20 pts)

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