A crane takes 2 minutes to lift a 500kg load to the top of a building that is 12m high. What is the useful power developed against gravity by the crane.
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0
Explanation:
crane is a bird not khali
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2
Answer:
500 Watts
Explanation:
Power = Work / Time
Work done = Mass x Gravity x Height
Work done = 500 x 10 x 12 = 60000
Power =60000 / 120
Power = 500 Watts
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