Question:

What are the advantages of a wheel?

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What are the advantages of a wheel? A man could carry on his back at most 80 kilos; an ox, perhaps 250 kilos; with skids it could pull about 400 kilos; but with a cart it could pull perhaps 750 kilos.

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  1. none, if you're a duck.


  2. They reduce friction which allows the same amount of force to do more work.

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