Pendulum Park

Lengthen the rod, slow the swing — set every pendulum chiming on the beat.

How to play

Each pendulum's swing period depends on its length. Adjust each rod so its swing lands on the beat, lining the chimes up in time — effectively solving T = 2π·√(L/g) by feel and ear.

• Drag a slider to change a rod's length
• Longer rods swing slower; shorter rods swing faster
• Match each pendulum to the target ring on the beat marker
• Get every chime swinging in time to finish the park

Game modes

• 2, 3 or 4 chimes for increasing difficulty
• Daily park or Practice for fresh setups

Controls

• Desktop: drag the length sliders; toggle Sound to hear the beat
• Phone & tablet: drag sliders with a finger and tap Sound

Tips & strategy

• Tune the slowest, longest pendulum first and build the others around its beat
• Period grows with the square root of length, so big swings need big length changes
• Trust your ears — when the chimes click into rhythm you're on the target

What you'll learn

Pendulum Park is a rhythm puzzle built on the physics of pendulums, where length sets the period you have to time.

• Skills: pendulum motion, period and length, periodic motion, timing
• Best for: roughly grades 7–11 (ages 12–16)
• For parents & teachers: shows the surprising rule that a pendulum's period depends on length, not weight.

About Pendulum Park

Pendulum Park is a physics rhythm puzzle about pendulum period and length. It's an original, free browser game made in-house for PlayPendium.

A free, original browser game on PlayPendium — no download, no install. Browse all games →