A stone of mass 100 g is suspended from one end of weightless string of length 1 m an d is allowed to swing in vertical plane .The speed of mass is 2 m/s when making angle of 60° with the vertical.Calculate the tension in the string when it is at 60°. And also calculate the velocity of body when it is at lowest position

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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