A crane applies a force of 4000N to lift a giraffe 15m
how much energy is transferred?
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Answer:
Given : m=600kg h=20 m
Time of operation t=2 min =120 s
Work done in lifting a box W=mgh=600×10×20=120000
Power required P=
t
W
=
120
120000
=1000 watts
Explanation:
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