Water flowing along an open channel drives an undershot waterwheel of radius 2m (figure). The water approaches the wheel with a speed of 5.0m//s and leaves with a speed of 2.5m//s, the amount of water passing by is 200 kg per second. At what rate does the water deliver angular momentum to the wheel (in J)?

Water flowing along an open channel drives an undershot waterwheel of

1.	Water flowing along an open channel drives an undershot waterwheel of radius 2m (figure). The water approaches the wheel with a speed of 5.0m//s and leaves with a speed of 2.5m//s, the amount of water passing by is 200 kg per second. At what rate does the water deliver angular momentum to the wheel (in J)?
Answer» SOLUTION :`01000.00` `(dL)/(DT)=(dm)/(dt)(v_(1)-v_(2)R=200xx(5-2.5)xx2=1000J`

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