A 2 kg block is gently pushed from rest at A and it slides down along the fixed smooth circular surface.If the attached spring has a force constantk =20N/m.What is unstretched length of spring so that it does not allow the block to leave the surface until angle with the vertical is 60 degree

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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