Q-The pitch of a screw gauge is 1mm and there are 100 divisions on circular scale..While measuring diameter of a wire,the linear scale reads 1mm and 47th division on circular scale concides with refrence line.The length of wire is 5.6cm.Find the curved surface area(in cmsquare) of the wire in appropriate number of significant figures.

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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