A 2 kg metal plate slides down a 21-meter high slope. At the bottom its speed is 8.3 m/s. To the nearest Joule, what was the magnitude of the work done by friction?
Solution)
Given,
Mass, m=2 kg
Height, h=21 m
We know, work done, W= mgh
Substitute calues,
W=2*9.8*21=411.6 J (Ans)
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A 2 kg metal plate slides down a 21-meter high slope. At the bottom its speed...