A wooden cone of mass 8.8 kg floats with its apex downwards in a liquid of RD 0.8.If the RD of wood is 0.5,what mass of steel of RD 7.8 suspended from the apex of the cone by a chord that will just be able to submerge the cone?

1)2.94kg 2)8.82kg 3)5.88kg 4)1.764kg

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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