4.1 A centrifugal pump is used to pump water from one tank to another. The difference in height between these tanks is 140m. What is the theoretical minimum power required to pump 15,000kg of water from the bottom tank to the top tank in 6 hours? Assume that gravity = 10m/s2. Show your calculations in your answer. Start writing here: The theoretical minimum power required to pump the water can be calculated using the formula for gravitational potential energy, which is mass (m) * gravity (g) * height (h). The power (P) is then this energy divided by the time (t) it takes to pump the water