Two racing cars of masses m1 and m2 are moving in circles of raddi r1 and r2 respectively. Their speeds are such that each makes a complete circle of radii r1 and r2 respectively.Their speeds are such that each makes a complete circle in time t. the ratio of the angular speeds of the first car to the second is

a)1:1 b)m1:m2

c)r1:r2 d)m1m2:r1r2

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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