A block is placed on a horizontal surface. The block is pushed by applying a force F which acts at an angle of `theta` with the vertical. How much force will be required to move the block if frictional coefficient `mu`? Discuss the fact if tan `theta< mu` .

A block of mass M is pulled along a frictionaless horizontal surface by a rope of mass m by applying a horizontal force F at the other end of the rope. The force exerted by the rope on the block is

A block of mass M is pulled along a frictionless horizontal suface by a rope of mass m by applying a horizontal force F at the other end of the rope. The force exerted by the rope on the block is

An iron block of mass 10 kg is kept on a horizontal floor. The block is pulled by a rope at an angle 30^(@) with the floor. What should be the minimum force necessary to set the block in motion. Given mu = 0.5

A block of mass 25 kg is kept on a horizontal plane. The block is pulled in a direction 30^(@) to the horizontal, and when the force is 100 N, the block start its motion. Find the coefficient on friction between the block and the plane.

A ball of 15 kg is kept-at a horizontal surface. To make it move at least 30 N force is to be acted upon that body. What is the value of the coefficient of friction?

A block of mass m_(2) is placed on a horizontal table and another block of mass m_(1) is placed on top of it. An increasing horizontal force F=alpha t is exerted on the upper block but the lower block never moves as a result .If the co-efficient of friction between the blocks is mu_(1) and that between the lower block and the table is mu_(2) , then what is the maximum possible value of mu_(1)//mu_(2) ?