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Find the useful power output (in W) of an elevator motor that lifts a 2200 kg load a height of 40.0 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 2200 kg is raised in height, but the full 10,000 kg is accelerated. (Enter a number.) W What does it cost (in cents), if electricity is $0.0900 per kW h? (Enter a number.)

Find the useful power output (in W) of an elevator motor that lifts a 2200 kg load a height of 40.0 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 2200 kg is raised in height, but the full 10,000 kg is accelerated. (Enter a number.) W What does it cost (in cents), if electricity is $0.0900 per kW h? (Enter a number.)

University Physics Volume 1
University Physics Volume 1
18th Edition
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:William Moebs, Samuel J. Ling, Jeff Sanny
Chapter7: Work And Kinetic Energy
Section: Chapter Questions
Problem 67P: A person in good physical condition can put out 100 W of useful power for several hours at a...
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(a) Find the useful power output (in W) of an elevator motor that lifts a 2200 kg load a height of 40.0 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 2200 kg is raised in height, but the full 10,000 kg is accelerated. (Enter a number.) W (b) What does it cost (in cents), if electricity is $0.0900 per kWh? (Enter a number.) cents
Transcribed Image Text:(a) Find the useful power output (in W) of an elevator motor that lifts a 2200 kg load a height of 40.0 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 2200 kg is raised in height, but the full 10,000 kg is accelerated. (Enter a number.) W (b) What does it cost (in cents), if electricity is $0.0900 per kWh? (Enter a number.) cents
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