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Physics, 21.03.2020 10:14 blackboy21
A pulley block and tackle is used to lift a piano. The piano weighs 2000N. If the worker used 100 N of force to lift the piano, what is the mechanical advantage of the block and tackle?
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A pulley block and tackle is used to lift a piano. The piano weighs 2000N. If the worker used 100 N...
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