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92 experiments / 15 branches

CONSTRAINT FORCES

Ropes, normals, and pressure supply exactly the force required — no more, and only up to their limit.

ATWOOD

Two masses, one rope, one pulley — the tension tells the truth.

5 STAGES · 12 TERMS

INCLINE

Slides or holds? Friction renders its verdict before anything moves.

5 STAGES · 12 TERMS

CIRCULAR

v⃗·a⃗ = 0, bitwise — a force that steers forever and spends nothing.

5 STAGES · 8 TERMS

FLOAT

Archimedes’ crown test: two weighings and the density has nowhere to hide.

5 STAGES · 8 TERMS

PRESS

F₂ = F₁(D₂/D₁)² — the lever’s bargain with a liquid arm.

5 STAGES · 9 TERMS

LADDER

Demand grows rung by rung; supply never moves — the slip point, computed first.

5 STAGES · 10 TERMS

BANKED

v₀ = √(rg·tanθ) — the speed at which the road itself steers.

5 STAGES · 9 TERMS

TACKLE

One rope, one tension, n strands — pull n× farther, n× lighter.

5 STAGES · 8 TERMS

VENTURI

Faster means cheaper — the throat trades pressure for speed, exactly priced.

5 STAGES · 8 TERMS

ROLLING POINT

A point on a rolling wheel traces a cycloid — contact stops dead, the top races at 2v, the flange runs backward.

5 STAGES · 5 TERMS

THEORY IN PLAY — Interactive Physics ·

Pause at stages ←→ step · PgUp/Dn stage · Space play

Speed Loop scene

Given

Computed