3 blocks of mass 1 kg, 4 kg and 2 kg are placed on a smooth horizontal plane with point of contacts between 1 kg and 4 kg, 4 kg and 2 kg blocks. Force of 120 N is applied on 1 kg block and force of 50 N is applied on 2 kg block. Find the normal force between 1 kg and 4 kg blocks.

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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