A spool of wire rests on a horizontal surface. as the wire is pulled, the spool does not slip at contact point. on seperate trials, each of the forces F1,F2,F3 and F4is applied to the spool. for which one of these forces the spool will rotate clockwise, anticlockwise and will not rotate?

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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