KINETIC / 01 · MOMENTS & EQUILIBRIUM
Balance bench.
A small mass, placed farther away, can balance a larger one. Find the distance that makes it work.
FREE PLAY / NO WRONG ANSWERS
Room to experiment
MOVES00
MOMENT · kg·m0
An ideal beam on a fixed pivot under uniform gravity. The signed moment is the sum of mass times distance. Equations, units and limits ↓
DISTANCE / m 1 division = 1 m
Waiting for your first move
ANTICLOCKWISE
CLOCKWISE
01 — CHOOSE A WEIGHT
02 — PLACE IT ON THE BEAM
The graphite weights are fixed. The red ones are yours.
Next: move one weight by a single division and watch the signed moment change, or choose another experiment below.
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Balanced.
Left and right moments are equal.
The model, its equations and its limits
THE PRINCIPLE Signed moment = Σ(m × r), in kg·m.
At balance, left and right moments match.
YOUR CONTROLS Tap a weight, then a beam position.
Or drag a red weight directly onto the beam.
Uniform gravity · ideal pivot