(a) If the small piston of a hydraulic lever has a diameter of 3.72 cm, and the large piston one of 51.3 cm, what weight on the small piston will support 18.6 kN (e.g., a car) on the large piston? (b) Through what distance must the small piston move to raise the car 1.65 m?

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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