Asked by Anonymous
A mover hoists a 200 kg piano from the ground to a height of 5 m using a single pulley. What was the change in the piano's energy?
Answers
Answered by
MathMate
Gain in potential energy
=mgh
=200kg*9.81 m/s²*5m
=9810 N-m
equals work done in hoisting the piano.
=mgh
=200kg*9.81 m/s²*5m
=9810 N-m
equals work done in hoisting the piano.
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