How much work does the guy swimming in the endless pool to the left?

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How much work does the guy swimming in the endless pool to the left?

He does not move, his displacement is zero.
The work must be therefore zero too. Useless pool.

2007-06-08 11:46:14 · 2 answers · asked by Alexander 6 in Science & Mathematics ➔ Physics

2 answers

Except, relative to the water he moves a bunch...

2007-06-08 11:49:50 · answer #1 · answered by yerffej89 3 · 1⤊ 0⤋

It depends on the frame of reference. He moves relative to the water and there's work associated with that. At the very least he heats the water by stirring it. The work he does may be useless but it's not zero.

2007-06-09 15:11:08 · answer #2 · answered by kirchwey 7 · 0⤊ 0⤋