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**1. An electric pump raise 9.1m^3 of water from a reservoir whose water-level is 4m**

below ground level to a storage tank above ground. If the discharge pipe outlet is

32m above ground and the operation takes 1hour,find the minimum power rating of

the pump if it's efficiency is 70%.(1m^3 of water has a mass of 1000kg)

## Homework Equations

## The Attempt at a Solution

An Idea suddenly came to me I need to find the energy but using Potential Energy formula? mgh?

I'm sorry I have no Idea how to attempt it, please help me, give me a hint on what to do.