A rectangular tank that is 3 feet long, 6 feet wide and
3 feet deep is filled with a heavy liquid that weighs 110
pounds per cubic foot. In each part below, assume that the tank is
initially full. Your answers must include the correct units. (You may enter
lbf or lb*ft for
ft-lb.)
(a) How much work is done pumping all of the liquid out over the top
of the tank? (b) How much work is done pumping all of the liquid out of a spout
6 feet above the top of the tank? (c) How much work is done pumping two-thirds of the liquid out over
the top of the tank? (d) How much work is done pumping two-thirds of the liquid out of a
spout 6 feet above the top of the tank?