a rod of mass m kg and lengh l meter is hinged about its lowest end(say A) and is vertical initially. now the end A is accelerated horizontally with acceleration a=g m/s². the hinge reaction when the rod becomes horizontal is

(A) R_x = 4mg/3 , R_Y = mg/3

(B) R_x = mg/3 , R_Y = mg/4

(C) R_x = mg/4 , R_Y = mg/3

(D)R_x = 4mg , R_Y = mg/4

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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