posted by Howie .
A dentist's chair with a patient in it weighs 2260 N. The output plunger of a hydraulic system begins to lift the chair when the dentist's foot applies a force of 61 N to the input piston. Neglect any height difference between the plunger and the piston. What is the ratio of the radius of the plunger to the radius of the piston?
rplunger / rpiston =
F2/F1 = S2/S1 =πR^2/πr^2= (R/r)^2