A 1200 kg elevator driven by electric motor can safely carry maximum load of 800 kg. What is power provided by motor when elevator ascends with full load at speed of 2.3 m/s?

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Keith LeannonLv2

25 Nov 2019

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(a). Find the useful power output of an elevator motor that lifts a 2500-kg load a height of 35.0 m in 12.0 s, if it also increases the speed from rest to 4.00 m/s. Note that the total mass of the counterbalanced system is 10,000 kg—so that only 2500 kg is raised in height, but the full 10,000 kg is accelerated. (b) What does it cost, if electricity is 0.0900 $.

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Find the useful power output of an elevator motor that lifts a 2500-kg load a height of 35.0 m in 12.0 s, if it also increases the speed from rest to 4.00 m/s. Note that the total mass of the counterbalanced system is 10,000 kg—so that only 2500 kg is raised in height, but the full 10,000 kg is accelerated. (b) What does it cost, if electricity is $0.0900 per kW h?

blushfly281

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A 1200 kg elevator driven by electric motor can safely carry maximum load of 800 kg. What is power provided by motor when elevator ascends with full load at speed of 2.3 m/s?

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