A load of 4.0 kg is suspended from a ceiling through a steel wire of length 20m and radius 2.0 mm.It is found that the length of the wire increases by 0.031mm as equilibrium is achieved.Find Young's modulus of steel.Take g=3.1 pi m/s2

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