a string of negligible thickness is wrapped several times around a cylinder kept on a rough horizontal surface.a man standing at a distance l from the cylinder holds on end of the string and pulls the string and pulls the cylinder towards him.there is no slipping anywhere.the length of the string passed through the hand of man while the cylinder reaches his handis??

Three identical balls are placed on a frictionless horizontal surface touching each other. They stick to each other because of adhesive. Another ball of same radius and mass m is placed over the void created by the three balls. Find the forces applied by the balls kept on the floor to each other if the system remains in equilibrium.

A car loaded with water having total mass 1000 kg moves on a straight horizontal Road starting from rest under the action of a force of 100 Newton. The water spills throw a small hole in the bottom at a rate of 0.1 KG per second the velocity of cart after 300 seconds is nearly.

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