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Robin uses a pulley system to lift a bag of food into the trees on a camping trip. The food has a mass of 40 N and must be at least 2 m off the ground to be out of a bear’s reach. If she uses a single pulley, calculate how much work, in J (remember 1 N*m = 1 J), Robin will have to do.
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Robin uses a pulley system to lift a bag of food into the trees on a camping trip. The food has a ma...
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