Question

A water pump can lift 30kg of water per minute to a tank. If the potential energy of water stored is 23.4 kJ, g = 10 m/s², then the height of water tank is

Answer 1

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Here's your answer

mass= 30kg

potential energy = 23.4 kj = 23.4 ×10^3 kj

we know that potential energy is given by :-

potential energy = mgh

h= potential energy ÷ mg

h= 23.4×10^3 ÷ 30×10

h= 78m

hence height is 78m.