need confirmation in arihant mec vol 2(d c pandey) ,rotational dynamics ,example 9.19,in explanation part 9.10)torque eqs applied(i.e f cross R) are incorrect right eg 9.19 the question is two masses m1,m2 are connected by massless sting over a solid cylinder(no thread slipping and no axle friction is absent) if m1(left side block ) and t1 is tension in left side part of string,m2(rigt block) t2 is tension in right part of string the eqs given in book are t1-m1g=m1a m2g-t2=m2a (t2-t1)r=.5mr^2(a/r)(torque eq given in text) r is radius of cylinder and m is mass of cylinder

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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