Two masses A and B of 5 kg and 6 kg respectively are connected by a string passing over a frictionless pulley fixed at the corner of table as shown in the figure. The coefficient of friction between A and the table is 0.3. Find the minimum mass of C (in kg) that must be placed on A to prevent it from moving (Take g = 10 m/s2).
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A boy of mass 4 kg is standing on a piece of wood having mass 5 kg. If the coefficient of friction between the wood and the floor is 0.5, the maximum force that the boy can exert on the rope so that the piece of wood does not move from its place is ______ N. (Round off to the Nearest integer)
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