Question

Input Piston - - Lift Piston - - - - - - Figure 1 Input Piston -------26 Lift Piston Figure 2

To work on your car you use a hydraulic lift as shown in the diagram. It confines a fluid with ρ = 2.16 kg/m³.Your car has mass Mcar = 980 kg. The lift piston has mass Mpiston = 225 kg. The input piston (on the left) is massless and has an area of 0.785 m². The lift piston (on the right) has an area of 4.14 m².

1. The lift piston base and the input piston base are at the same height. What force is required to maintain this system?

Finput = 2180 N
		Finput = 43300 N
		Finput = 6168 N
		Finput = 2710 N
		Finput = 530N

2. How far must you push the input piston down to lift the car Δ h = 1.7 m?

-h_input = 3.25 m

-h_input = 34 m

-h_input = 6.81 m

Answer 1