Physics, 28.11.2021 09:20, destinyharris8502

John uses a pulley to lift a 600N object 4 m. It exerts a force of 150N on the rope to lift the object. How long will the rope have to pull John without considering the friction? With friction? What is the mechanical advantage of
this pulley?

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John uses a pulley to lift a 600N object 4 m. It exerts a force of 150N on the rope to lift the ob...