Atank is full of water. find the work required to pump the water out of the spout. use the fact that water weighs 62.5 lb/ft3. (assume r = 6 ft, r = 12 ft, and h = 15 ft.)

Work done,

Solution:

Consider the weight of water is

Let us assume:

r = 6 ft

R = 12 ft

h = 15 ft

Now, let us consider the volume of the cross-section (horizontal) be dV, from the rim top let y be its vertical distance and dw be its weight

Now,

radius =

radius =

radius =

dV =

The weight of cross-section is given by:

Now, the work done is given by:

On solving the above equation , we get:

i believe the answer is electric potential.

explanation: