calculate the amount of work done when 1 kg water falls from height of 10 m
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Answer:
Given: Mass of Water= 1kg. Height from which water Fallen= 1000cm.
To Find: Work done by water while falling.
Solution: We know that, ⟼ 1000cm= 10m. ⟼ Force= Mass×Acceleration. ⟼ Work= Force×Displacement. Here, Displacement(d) is 10m. Acceleration due to gravity is 9.8m/s² So, ↬ F= ma. ↬ F= 1×9.8= 9.8N. ↬ Work done= F×d.
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Work done = potential energy
As potential energy = mgh,
Work done = mgh. (m=mass. g=gravity. h=height)
= 1×10×10
= 100J
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