Three Point particles P,Q,R move in a circle of radius ‘r’ with different but constant speeds. they start moving at t=0 from intial postions in te figure. the angular velocities(rad/sec) of P,Q,R are 5pi,2pi and 3pi respectively,in the same sense.the time interval after which they will meet is:

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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