On the centre of a frictionless table, a small hole is made, through which a weightless string of lenth 2l is inserted. On the two ends of the strings, two balls of the same mass m are attached, Arrangement is made in such a way that half of the string is on the table top and half is hanging below. The ball on the table top is made to move in a circular path with a constant speed v, What is the centripetal acceleration of the moving ball?

A bead of mass m is attached to the mid-point of a taut, weightless string of length l and placed on a frictionless horizontal table. Under a small transverse displacement x, as shown, if the tension in the string is T, then the frequency of oscillation is-

A mass of 0.675 kg on a frictionless table is attached to a string which passes through a hole in the table at the centre. If the radius of the circle in which the mass rotates, is 5 m when its speed is 10 ms^(-1) , find the tension of the string. It is found that on drawing down the string by 0.2 m, the tension is increased 4.63 times. Calculate the work done by the string on the revolving mass during the reduction of the radius. [Hint : Apply work-energy theorem to find work done by the force]

Two bodies of mass 4kg and 6kg are attached to the ends of a string passing over a pulley. The 4kg mass is attached to the table top by another string. The tension in this string T_(1) is equal to: Take

Two bodies of mass 4kg and 6kg are attached to the ends of a string passing over a pulley. The 4kg mass is attached to the table top by another string. The tension in this string T_(1) is equal to: Take

Two bodies of mass 4kg and 6kg are attached to the ends of a string passing over a pulley. The 4kg mass is attached to the table top by another string. The tension in this string T_(1) is equal to: Take

Two identical masses are attached by a light string that passes over a small pulley, as shown . The table and the pulley are frictionless. The hanging block is moving

Two identical masses are attached by a light string that passes over a small pulley, as shown . The table and the pulley are frictionless. The hanging block is moving

A ball A of mass m attached to a string of length L is released when the string is horizontal. It strikes another ball B of mass 2 m suspended to another string of length L at rest as shown. Find the maximum angle made by the string if the collision is completely inelastic.