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One item is filed under this topic.
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How much work is done? |
2011-10-15 |
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From Jean:
"A conical buoy that weighs B pounds floats upright in water with its
vertex "a" feet below the surface. A crane on a dock lifts the buoy
until its vertex just clears the surface. How much work is done ?"
Answered by Penny Nom. |
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