the weight of the water is 60*20*14*62.4 = ____ lbs
the center of mass is at a depth of 7 ft
work = weight * distance
or, you can use an integral, as indicated by your text.
google can provide many examples.
Post your work if you get stuck.
A rectangular swimming pool 60 ft long, 20 ft wide, and 14 ft deep is filled with water to a depth of 11 ft. Use an integral to find the work required to pump all the water out over the top. (Take as the density of water δ=62.4lb/ft3.)
Work=??????
1 answer