50 L of water falls 10.0 m into the bucket of a water wheel. How much energy is imparted to the wheel?

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Guest Feb 28, 2015

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1 L of water has a mass of 1 kg, so the potential energy of 50 L of water 10 metres above the bucket is:

50*1*9.8*10 Joules = 4900 Joules

This is turned into the same amount of kinetic energy as it hits the bucket.

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Alan Feb 28, 2015

Alan · Answer 1 · 2015-02-28T06:00:36

1 L of water has a mass of 1 kg, so the potential energy of 50 L of water 10 metres above the bucket is:

50*1*9.8*10 Joules = 4900 Joules

This is turned into the same amount of kinetic energy as it hits the bucket.

.

Melody · Answer 2 · 2015-03-01T10:28:40

Thanks Alan, I am learning/revising too.

Potential energy = mass* gravity * height

[mass kg] [ gravity m/s^2] [ height m] Energy is measured in Joules