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

Guest Feb 28, 2015

#1
+26550
+10

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.

.

Alan  Feb 28, 2015
Sort:

#1
+26550
+10

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.

.

Alan  Feb 28, 2015
#2
+91972
+5

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

Melody  Mar 1, 2015

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