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How much work is done lifting a 60 pound chair

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Reference no: EM132059405

1) A sphere of radius 1 foot is filled with 250 pounds of liquid. How much work is done pumping the liquid to a point 3 feet above the top of the sphere? (Draw a picture.)

2) How much work is done lifting a 60 pound chair from the ground to the top of a 20 foot building with a cable which weighs 1 pound per foot.

Reference no: EM132059405

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