A train of mass 600 metric ton is pulled by a locomotive of mass 150 metric ton. The speed of train is 54 kmph. The locomotive pulls the train on level track. The force of friction on locomotive and the train is10 Newton per metric ton. Calculate the Power of the locomotive

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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