The ends of a spring are attached to masses 2kg and 3kg. the 3kg block rests on a horizontal surface and 2kg block which is vertically above it is in eqiulibrium producing compression of 1cm of spring initially. find minimum value of distance the 2kg mass must be displaced down so that when it is released the 3kg block may lift off from the ground.

please answer fast.

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.

11

21

31

41