College Physics with MasteringPhysics 7th Edition by Jerry Wilson,Anthony Buffa,Bo Lou

Exercise 109

A hydraulic lift in a garage has two pistons: a small one of cross-sectional area 4.00 cm 2 and a large one of cross-sectional area 250 cm 2. (a) If this lift is designed to raise a 3500-kg car, what minimum force must be applied to the small piston (b) If the force is applied through compressed air, what must be the minimum air pressure applied to the small piston