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?

hello there!

your answer is a “generator”

a generator does not create energy but instead it transforms it.

it’s basically a motor working in reverse.

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false br