Question

a hydraulic press in a garage is attached to a platform that is used to lift cars. the press includes a small piston that is attached to a fluid-filled pipe, which opens into a larger chamber under the platform (see image below). if the platform has a radius of 3 m and the piston has a radius of 3 cm, how much force (in n) must be applied to the piston in order to raise a 1200 kg car?

Answer 1

.12 kg

Step-by-step explanation:

Area under car = pi 3^2 = 9 pi m^2

Area of piston = pi (.03)^2 = .0009 pi m^2

As a ratio:

.0009 / 9 = x / 1200

x = 1200 ( .0009/9) = .12 kg