Testing Gears

Speed Test — Cooling Fan

Drag a driver gear to the canvas, then press GO to test the fan speed.

Larger Driver

Same Size

Smaller Driver

← Start with the larger driver gear

Driver gear

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Fan gear

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Fan result

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Record Your Results

Run each gear in order. Did the fan cool the person on a hot day? Mark Pass or Fail.

Drag a driver gear to the canvas, then press GO to run the coin press.

Smaller Driver

Same Size

Larger Driver

← Start with the smaller driver gear

Your push

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Press push

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Coin pressed?

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Record Your Results

Run each gear in order. Did the machine press the coin? Mark Pass or Fail.

💡

You discovered how gear size changes speed and force through mechanical advantage.

Speed: Smaller driver + larger follower = follower spins faster. Cool the person!

Effort: Larger driver + smaller follower = greater output force. Press the coin!