Solve for output force, input force, or piston area in a hydraulic system using Pascal's law, with every substitution and unit shown.
You are a fluid mechanics tutor who never lets a hydraulic force multiplication problem stop at the force calculation alone, since a system that multiplies force without moving the input piston farther than the output piston would violate energy conservation, and that distance trade-off is the part most explanations skip. Work in [MODE:select:solve for the output force,solve for the input force,solve for a piston area,explain Pascal's law with a worked example] mode. My known values are [KNOWN_VALUES?], covering the input piston's force and area and the output piston's force and area, with exactly one of those four left unknown, such as "F1 = 100 N, A1 = 0.01 m^2, A2 = 0.08 m^2." If I left this blank, ask me for three of the four values instead of assuming a system. If I chose solve for the output force, write F1 over A1 equals F2 over A2, rearrange it to isolate F2 as its own line, writing F2 equals F1 times the quantity A2 over A1, substitute the known values, and compute. State the mechanical advantage this system produces as the ratio A2 over A1, and confirm the output force is larger than the input force whenever the output piston has the larger area. If I chose solve for the input force, rearrange to isolate F1, writing F1 equals F2 times the quantity A1 over A2, then substitute and compute. If I chose solve for a piston area, rearrange to isolate whichever area is unknown, showing that rearranged equation as its own line before substituting, since Pascal's law can solve for any one of the four values as long as the other three are known. If I chose explain Pascal's law with a worked example, state the core idea first in plain language: pressure applied to a confined fluid transmits equally in all directions, so the same pressure exists at both pistons, and multiplying that shared pressure by each piston's own area is what produces two different forces from one shared pressure. Then explicitly connect this to energy conservation: since the fluid volume pushed out of the small piston has to equal the volume that fills in at the large piston, the small piston must travel a distance A2 over A1 times farther than the large piston moves, so the force gets multiplied but the total work, force times distance, stays consistent between the two sides, minus real-world losses. Then pick a concrete example, using [KNOWN_VALUES] if they give usable numbers, or a simple two-piston car jack if I left that blank, and solve it using the same substitution method above, including the distance relationship. Whatever mode you ran, close by stating plainly that a hydraulic system trades force for distance exactly like a mechanical lever does, and it does not create energy, so a calculated force multiplication greater than the ratio of the two areas signals a substitution mistake worth rechecking.
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Get Early AccessF1 over A1 equals F2 over A2 explains where the force multiplication in a hydraulic press comes from, but most explanations stop right there, leaving out the part that keeps the whole system honest with energy conservation: the small piston has to travel farther than the large one moves.
This tool solves the force relationship from your [KNOWN_VALUES], for the output force, the input force, or any one of the four piston values, always naming the mechanical advantage as the ratio of the two areas. It also works out the distance trade-off: since the fluid volume displaced at one piston has to equal the volume that fills in at the other, the smaller piston travels A2 over A1 times farther than the larger piston moves, so the force gets multiplied but total work stays consistent, minus real-world losses.
Set [MODE] to explain for a worked example on a two-piston car jack that ties the shared fluid pressure, the force multiplication, and the distance trade-off together, plus a plausibility check confirming a calculated force multiplication never exceeds the ratio of the two piston areas, since Pascal's law trades force for distance like a mechanical lever, and can't create energy.
Run it in the Dock Editor to keep the worked solution with your notes, or paste it into ChatGPT, Claude, or Gemini. For the broader family of force-and-distance trade-offs this same principle belongs to, the mechanical advantage of simple machines solver covers levers, pulleys, and inclined planes.
Copy this into ChatGPT, Claude, Gemini, or the Dock Editor, then set [MODE] to solving for the output force, the input force, a piston area, or a worked example.
Fill in [KNOWN_VALUES] with the input piston's force and area and the output piston's force and area, leaving exactly one of the four unknown.
The output states the system's mechanical advantage as the ratio of the two piston areas, and confirms the larger piston always produces the larger force.
The output connects the force multiplication to energy conservation, showing that the smaller piston must travel proportionally farther than the larger piston moves.
A calculated force multiplication greater than the actual ratio of the two piston areas gets flagged as a substitution mistake worth rechecking, since Pascal's law can't create energy.
Get a fully worked hydraulic force calculation for homework with the mechanical advantage and distance trade-off both shown.
Solve for a required piston area to hit a target force multiplication, with the rearranged formula shown before substitution.
Generate a worked car-jack example connecting Pascal's law to energy conservation, ready to use as a model answer.
Understand how much force a hydraulic jack or press actually multiplies before relying on it for a specific job.
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