# Pascal's Law, When does pressure equal out?

I've been looking into how hydraulic lifts work and i don't quite understand yet how Pressure and Forces relate. Let's assume the water is on equal level on both sides and i apply a force to The smaller Area A is amplified by a factor B/A on the other side at Area B, But when do these forces equal out? Because assuming the Pipes are long enough at some point the Force Applied on A will be canceled out by the weight of all the water on the otherside at B.

Assuming that the system was in equilibrium to begin with, the weight of the water column B was already compensated by the the weight of the water column A. (Although the water column B is heavier, it is distributed over a larger area, as compared to A.)

Any external force applied anywhere in the fluid, will not have to cancel any weight elsewhere, because that has already been taken care of (since the system was in static equilibrium to begin with).

• But when a force is applied how does that force cancel out? Is it when the water on the side of b has reached a gravity force of the same size as the force A applies on B?
– Kais
May 13, 2020 at 12:58
• @Kais Nothing cancels the force. If it were to be cancelled, you wouldn't see the system change. You can keep applying the force for as long as want. May 13, 2020 at 13:02
• So the Area A would continue to go down aslong as a force is applied to it? No matter how much water is moved to the side of b?
– Kais
May 13, 2020 at 13:06
• @Kais Yep....... May 13, 2020 at 13:12
• Is there any intuitive explanation for this?, because this feels rather intuitive to me.
– Kais
May 13, 2020 at 14:34