A hydraulic lift is used to jack a 920 kg car 42 cm off the floor. The diameter of the output piston is 18 cm, and the input force is 350 N.
(a) What is the area of the input piston?
(b) What is the work done in lifting the car 42 cm?
(c) If the input piston moves 13 cm in each stroke, how high does the car move up for each stroke?
(d) How many strokes are required to jack the car up 42 cm?
(e) Show that energy is conserved