Pressure & Hydraulics Explorer
Compare solid pressure, liquid gauge pressure, and hydraulic transfer with readable diagrams, guided reasoning, and misconception-targeted feedback.
Learning goals
- Define pressure as force per unit area
- Apply pressure = force ÷ area
- Explain pressure transmission in a hydraulic press
- Apply density = mass ÷ volume
- Apply liquid-column pressure = height × density × gravitational field strength
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Change one variable, save another reading, then compare the evidence.
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Fair-test check
Study lensDistinguish clearly between force and pressure using p = F / A.
Try this
Keep asking one question: what changed here, the force, the area, the depth, or the pressure?
Learn to
- Distinguish clearly between force and pressure using p = F / A.
- Explain why gauge pressure depends on depth and density, and when points at the same depth have the same pressure.
- Use Pascal's principle to explain hydraulic force multiplication together with the distance trade-off.
Exam transfer
Governing idea
Solid pressure p = F/A, liquid pressure change Δp = ρgΔh, and an ideal hydraulic system gives Fₒᵤₜ/Fᵢₙ = Aₒᵤₜ/Aᵢₙ.
Model boundary
Liquids are static and incompressible, g = 10 N kg⁻¹, pistons are frictionless, and compared points share the stated surface pressure. Dynamic flow losses are omitted.
Avoid this trap
Pressure and force are not interchangeable. A hydraulic lift multiplies force through a larger area while conserving work in the ideal limit.
How to explore
Compare force and area, track liquid gauge pressure with depth, and explain hydraulic multiplication without energy myths.
Predict the outcome, change one variable at a time, then interpret the result. Completion records participation only and does not award mastery.
About this activity
Compare solid pressure, liquid gauge pressure, and hydraulic transfer with readable diagrams, guided reasoning, and misconception-targeted feedback. A text explanation and no-JavaScript route remain available.
How this activity affects progress
Course and syllabus information
- Course
- SEC G3 Physics
- Edition
- SEC G3 Physics 2027