Ps tell this ques.. AB is a chain of mass M kg and length L and the chain is held along vertical line. upper end is so held that lower end B just touches the horizontal surface. When upper end A is released chain starts falling down and is coming to rest on floor. what is force exerted on floor when half of chain has fallen down??

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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