A smooth uniform rod of length L and mass M has two identical beads of negligible size, each of mass m, which can slide freely along the rod.initially the two beads are at the centre of the rod and angular vel. of the system is omega about axis per. to plane and passing through the centre.when the beads reach the end of the rods,ang. vel. is?no ext. force. why do we apply conservation of angular momentum?

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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