🛢️ Hydraulic Jack: Pascal Force Gain, Pump Strokes, Seal Friction and Lift (2D)

Cut-away side view of a hand-pumped hydraulic jack: a small pump piston driven by a handle sends oil to a large ram that lifts a load. Set the two piston diameters, the handle ratio, the hand force, the load, the seal friction, the stroke, the trapped oil and the pumping rate, and see the pressure, the force gain, whether the hand is strong enough, the lift per stroke and how many strokes it takes. Pascal pressure and energy balance, the lift per stroke, oil compressibility and the stroke count are checked numerically, with four in-page numerical checks.