Question

Hi all, please help me with this work problem:
Find the work done in pumping all the water out of a conical
reservoir of radius of base 3 ft and height 5 ft, if the water is
to be lifted one foot above the top of the reservoir.

Answer 1

hmm, a cone

Answer 2

is it wide at the bottom or top?

Answer 3

Top, just like you drew

Answer 4

the idea is that Word is equal to Force times distance. Force is equal to the weight of a particular "slice"