Suppose you are standing in a moving lift (lift moving from top to bottom with constant velocity). Also, you are holding some 25kg box in your hand. Now suppose the lift cable has snapped. So, now the lift will be freely falling body (under earth’s gravitational acceleration). My question is, whether the person will feel the weight of box in freely falling lift (under earth’s gravitational acceleration)?

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