The proper question is what percentage, less than 100, is (Y) compared to (Z), the force needed to fill one container?
There is no (Z) in my equation
The (force) energy needed to fill one container is (F)
The energy return you get from filling one container = (F) - 8% or 58.88 pounds of lifting force than the absolute value of 64 pounds of lifting force which is the weight of one cubic foot of water.
Comparing the energy in and out of one bucket is a lose. The percentage of gain from one is negative,
Until you realize that we have ten (10) buckets in tandem producing the output energy.
it is a huge increase in torque

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