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A block A of mass 2 kg is placed over another block B of mass 4 kg, which is placed over a smooth horizontal floor. The coefficient of friction between A and B is 0.4. When a horizontal force of magnitude A block A of mass 2 kg is placed over another block B of [...]

The maximum value of mass of block C so that neither A nor B moves is ( given that mass of A is 100 kg and that of B is 140 kg. Pulleys are smooth and friction coefficient between A and B and between B A horizontal force just sufficient to move a body of [...]

A body of mass M is resting on a rough horizontal plane surface, the coefficient of friction being equal to muon. At t = 0, a horizontal force F = F0t starts acting on it, where F0 is a constant. A body of mass M is resting on a rough horizontal plane surface a horizontal [...]

A system is pushed by a force F as shown in Fig. 7.266. All surfaces are smooth except between B and C. Friction coefficient between B and C is muon. Minimum value of F to prevent block A system is pushed by a force F as shown in Fig. 7.266. All surfaces are smooth except [...]

Two blocks of masses M1 and M2 are connected with a string passing over a pulley as shown in Fig. 7.265. The block M1 lies on a horizontal surface. The coefficient of friction between the block M1 and the horizontal surface A horizontal force just sufficient to move a body of mass 4 kg lying [...]

Two blocks A and B of masses 6 kg and 3 kg rest on a smooth horizontal surface as shown in the Fig. 7.264. If coefficient of friction between A and B is 0.4, the maximum horizontal force which the maximum horizontal force which Two blocks A and B of masses 6 kg and 3 [...]

A block of mass m is placed on another block of mass M, which itself is lying on a horizontal surface. The coefficient of friction between two blocks is mu 1 and that between the block of mass M A block of mass m is placed on another block of mass M which itself is [...]

The upper half of an inclined plane with inclination phi is perfectly smooth while the lower half is rough. A body starting from rest at the top will again come to rest at the bottom if the coefficient A prismatic block of mass m is kept on a groove. The bottom line of the groove [...]

Blocks A and B in the Fig. 7.262 are connected by a bar of negligible weight. Mass of each block is 170 kg and mu A = 0.2 and mu B = 0.4, where mu A and mu B are the coefficients of limiting friction Blocks A and B in the Fig. 7.262 are connected [...]

A horizontal force just sufficient to move a body of mass 4 kg lying on a rough horizontal surface is applied on it. The coefficient of static and kinetic friction between the body and the surface A horizontal force just sufficient to move a body of mass 4 kg lying on a rough horizontal surface [...]