Question

A trough is 9 meters long, 2 meters wide, and 3 meters deep. The vertical cross-section of the trough parallel to an end is shaped like an isoceles triangle (with height 3 meters, and base, on top, of length 2 meters). The trough is full of water (density 1000

kg

m

3

1000

kg

m

3

). Find the amount of work in joules required to empty the trough by pumping the water over the top. (Note: Use

g

=

9.8

m

s

2

g

=

9.8

m

s

2

as the acceleration due to gravity.)

Answer 1

Here's the solution.. Please have a look at it...