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OpenStudy (anonymous):
A 2.17-kg child descends a slide 3.5m high and reaches the bottom and reaches a speed of 2.2m/s. How much thermal energy due to friction was generated in this process? Help!
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OpenStudy (anonymous):
initial energy - final energy= heat generated \[mgh-mv ^{2}/2 = heat \]
OpenStudy (anonymous):
is it clear?
OpenStudy (anonymous):
first when the child is standing above it has potential energy then it is converted to kinectic energy if some energy is lost then it is given by chand's expression it is mgh-1/2*m*v^2 because of this reason
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