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Clancy has set up a pulley system to lift a 1400 N air conditioner 9.1 m up. The pulley system is 68 % efficient. If

Clancy has set up a pulley system to lift a 1400 N air conditioner 9.1 m up. The pulley system is 68 % efficient. If Clancy has to exert a force of 110 N, how much rope will he have to pull to lift the air conditioner

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