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A circular swimming pool has a diameter of 20 m, the sides are 4 m high, and the depth of the...

A circular swimming pool has a diameter of 20 m, the sides are 4 mhigh, and the depth of the water is 3.5 m. How much work (inJoules) is required to pump all of thewater over the side? (Theacceleration due to gravity is 9.8 m/s and the density of water is 1000 kg/m .)
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Answer #1



the area of any slice is
the volume of any slice is
the weight of any slice is...
Newtons
the work done to lift any slice is weight*height
if we let the bottom of the pool be y = 0 then the work to lift agiven slice is...
Joules
if we now sum up the work to lift every slice from y = 0 to y = 3.5then we have...



answered by: angelo
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