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How much work is done? 2011-10-15
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.
Apparent Weight in salt water 2009-06-06
From Rob:
If an object weighs 100kg in air how much will it weigh when suspended in salt water? Is there an easily used conversion calculation?
Answered by Janice Cotcher.



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