In a car lift, compressed air exert a force of, F1 on a small piston having a radius of 5.0cm. This pressure is transmitted to a second piston of radius of 15cm. The mass of the car is 1350kg. Acceleration due to gravity g=10s-2 . How high will the car be lifted if 785N force is applied on the smaller piston?

Two steel balls, each of mass m, are welded to a light rod of length l and negligible mass and are initially at rest on a smooth horizontal surface. a horizontal force of magnitude f is suddenly applied to the rod as shown. determine (a) the instantaneous acceleration a of the mass center g and (b) the corresponding rate at which the angular velocity of the assembly about g is changing with time.