A wheel with a fixed angle rotating so that the anstantaneous velocity of a referance line painted along a radious is w=At+Bt² when A=6.2 rad/s² and B=8.7 rad/s².

1. If the referance line is instantly at ɵ=0 when t=0 finds its angular position when t=2.0 sec.
2. What is the instantaneous angular accleration of the reference line at t=0.50s

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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