Pinky exerts a power of 50 W and does work for 1 hour. Sweety exerts a power of 80 W
but does work for half hour. Who has done more work, Pinky or Sweety?
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Answer:
Pinky
Explanation:
work done = power*time
work done by pinky= 50W* (60*60) seconds
=50*3600= 180000joules
similarly
work done by sweety = 80W*(30*60) seconds
=80*1800 = 14400joules
hence pinky has done more work
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