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Engineering & MachinesMechanics

Gears

Trading speed for force is how bikes climb hills

A hill doesn't get any shorter when you click into an easier gear. So where does all that hard work go?

You'll find out

  • What a gear really trades
  • Why low gear can't make a climb cheaper
  • A gear set in concrete that still runs

Why it matters

Bikes, cars and clocks all strike the same bargain. See it once and every machine that turns makes sense.

About 3 min6 interactive slides · 5 questionsLesson 125 · Zone 14

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