m = 0.48 kg are you sure you mean grams?
You do not usually use a pump that powerful for so little mass. (about a horsepower to move one pound up 15 feet in 30 seconds.)
power in = 1200 Watts
energy in = 1200 *30 Joules
work out = 0.48 * 9.81 * 5 Joules
so eff = work out/energy in
= 0.48*9.81*5/(1200*30)
= 6.54 * 10^-4
I think you may mean 480 kg
A water pump of 1.2kilowatts rating,pumps 480g of water into an over head tank at a height of 5m in 30 seconds. What is d efficiency of d time
2 answers
Mass = 480kg?
F = M*g = 480 * 9.8 = 4704 N.
Po = F*d/t = 4704 * 5/30 = 784 J./s = 784 Watts. = Power out.
Eff. = Po/Pi = 784/1200 = 0.653 = 65.3%.
F = M*g = 480 * 9.8 = 4704 N.
Po = F*d/t = 4704 * 5/30 = 784 J./s = 784 Watts. = Power out.
Eff. = Po/Pi = 784/1200 = 0.653 = 65.3%.