In order to keep a leaking ship from sinking, it is necessary to pump 15.0 {\rm lb} of water each second from below deck up a height of 2.00 {\rm m} and over the side.What is the minimum horsepower motor that can be used to save the ship?

Question

What is the minimum horsepower motor that can be used to save the ship?

Answer 1

I am unfamiliar with the units {\rm lb} and {\rm m}.

Please type them in a recognizable format, or spell them out. Are they just supposed to be pounds and meters? It would seem strange to mix British and metric units.

The power must be sufficient to raise the potential energy of ___ (mass/second) by an amount equal to the potential energy increase per unit mass.

Answer 2

the units are just lb and m, drwls