Question 6
When a hoist lifts a vehicle, what can be said about the distances the two pistons move?
The right answer is the one marked above.
The small piston moves further than the large one. Since the liquid cannot be compressed, the volume pushed out from under the small piston must arrive under the large one.
The large piston has the greater area, so that same volume raises it only a little. Whatever factor multiplies the force divides the distance — so there is no gain in energy.