Physics · Motion and Energy

Pendulum Lab

Explore how length, gravity, mass and friction affect a swinging pendulum. Choose a screen to begin.

Physics

Keyboard help

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

TabShift + Tab

Move to the next or previous control.

EnterSpace

Press a focused button or checkbox.

←→

Change a focused slider, or adjust a focused pendulum's starting angle.

123

Open the Intro, Energy or Lab screen.

M

Return to the screen selection view.

Space

Play or pause the simulation.

S

Advance the simulation by exactly 0.01 seconds.

R

Reset the whole simulation to its starting values.

Esc

Close a menu or dialog, or leave full screen.

Pendulum Lab

Version 0.5.7

Explore a swinging pendulum: change its length, mass, gravity and friction, measure its period, and see how energy moves between motion, height and heat.

A Pandai simulation for learning about pendulum motion and energy.

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Tell us what went wrong so the simulation can be improved.

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Choose a simulation screen to begin.