Air pushes on a piston with an area of 900cm2. how large of a force is needed to lift a 1.22x103 kg car?
the force needed to lift the car is equal to the weight of the car, which is m g so force 1220 kg x 9.81m/s/s 1.20x10^4N if you want to find the pressure of air needed, use P F/A where A 0.09m^2 P1.2x10^4N/0.09m^2 and find your answer either in Pa or N/m^2
