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A mover uses a pulley to lift a 2,400-newton piano up to the second floor. Each time he pulls the rope down 2 meters (input distance), the piano moves up 0.25 meter (output distance). With what force does the mover pull on the rope?

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A mover uses a pulley to lift a 2,400-newton piano up to the second floor. Each time he pulls the ro...
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