Mass of a uniform rod AB of length 1m is 0.6 kg.A man of 0.4kg is hung at the distance of 0.1m from A. In order to make the road horizontal a knife edge should be placed at a distance ?

1)34cm from A

2)30cm from A

3)26cm from A

4)24cm from A

5)20cm from A

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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