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Mathematics · Balance and Torque

Balancing Act

Place masses on the plank and discover how equal turning effects create balance.

M Mathematics

B

Choose what to explore

Start with a mode

Each mode explores balance and turning effect in a different way.

See what happens

Balance plank

Drag a mass onto a plank position.

Intro

Balanced

Mass shelf Pick up, then choose a position

Explore

Controls

Challenge

Balance the plank.

Score 0 / 0

Turning effect

Left0.0 N·m

Right0.0 N·m

Balanced

Show in the scene

Mass labels Force vectors Position markers Level indicator

Torque is mass times gravity times distance from the pivot. The plank balances when both sides give the same torque.

B Balancing Act

Simulation menu

Simulation tools

Keyboard help

Use Tab to move between the masses, positions and controls, then use the keys below.

TabShift + Tab

Move to the next or previous control.

EnterSpace

Pick up a mass, place it at a focused position, or toggle a checkbox.

123

Open a mode from the mode selection or switcher.

M

Return to the mode selection screen.

R

Reset the active mode.

Esc

Cancel a held mass, or close a menu or dialog, or leave full screen.

Pandai Simulation

Balancing Act

Version 0.5.2

Explore balance and turning effect. Place masses on a plank and see how equal torques keep it level.

Torque is mass times gravity times distance from the pivot.
The plank balances when the left and right torques are equal.
Moving a mass farther from the pivot increases its torque.

A Pandai Mathematics and Science simulation.

Choose a simulation mode to begin.

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