A ball of mass m is attached to a light string of length L and suspended vertically. A constant horizontal force, whose magnitude F equals the weight of the ball, is applied Determine the speed of the ball as it reaches the `90^(@)` level.

A ball of mass 0.5 kg is attached to a light string of length 2m. The ball is whirled on la horizontal smooth surface is a circle of rdius 2 m as shown in fig. If the string can withstand tension up to 100 N, what is the maximum speed at which the bal can be whirled.

A ball of mass m kept at the centre of a string of length L is pulled from centre in perpendicular direction and released. Prove that motion of ball is simple harmonic and determine time period of oscillation

A ball of mass 200g is attached to a string of length 50cm and a force F is applied on it as shown. Find the work done by this force if string makes an angle 60^@ with vertical. In the initial and final position, speed of the ball is zero.

A particle of mass 21 g attached to a string of 70cm length Keeping the string always taut the ball describes a horizontal circle of radius 15cm Calculate the angular speed of the ball .

A ball of mass 0.25kg attached to the end of a string of length 1.96m moving in a horizontal circle. The string will break if the tension is more than 25N . What is the maximum speed with which the ball can be moved.

A ball of mass 0.25 kg attached to the end of a string of length 1.96 m is moving in a horizontal circle. The string will break if the tension is more than 25 N . What is the maximum speed with which the ball can be moved

Two balls of mass m and 2m are attached with strings of length 2L and L respectively. They are released from horizontal position. Find ratio of tensions in the string when the acceleration of both is only in vertical direction :

A light spring of length l and rigidity k is placed vertically on a table. A small ball of mass m falls on it. Determine the height h from the surface of the tube at which the ball will have the maximum velocity.

A ball of mass m is attached to one end of a light rod of length l , the other end of which is hinged. What minimum velocity v should be imparted to the ball downwards, so that it can complete the circle ?