Single and compound pulleys review - lifting our principal // Homemade Science with Bruce Yeany

Students have a better understanding when they actually try various pulley systems for themselves, especially when they get to try and lift each other. The biggest challenge is to see how many students it takes to lift our school principal using a single fixed pulley and then a series of compound pulleys. Is it possible to lift yourself using a set of pulleys? Our principal finds out.

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