A pump is used to maintain the water level in a tank 105 feet above the pump. When the pump is not running, what is the water pressure at the output pipe of the pump?

1. P=DwH
2. P=
3.

I'm not sure how to do this one?

Question

A pump is used to maintain the water level in a tank 105 feet above the pump. When the pump is not running, what is the water pressure at the output pipe of the pump? 

1. P=DwH
2. P=
3.

I'm not sure how to do this one?

mrnood · Answer

pressure in a static fluid is rho g h 

where rho is density g is gravity and h is height of fluid

Just be careful with the units here (it's much easier in metric system)