A weight lifter lifts a 330-N set of weights from ground level to a position over his head, a vertical distance of 2.10 m. How much work does the weight lifter do, assuming he moves the weights at constant speed?

A weight lifter lifts a 330-N set of weights from ground level to a position over his head, a vertical distance of 2.10 m. How much work does the weight lifter do, assuming he moves the weights at constant speed?

An Introduction to Physical Science

14th Edition

ISBN:9781305079137

Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres

Publisher:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres

Chapter4: Work And Energy

Section: Chapter Questions

Problem 23E: A student who weighs 556 N climbs a stairway (vertical height of 4.0 m) in 25 s. (a) How much work...

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A weight lifter lifts a 330-N set of weights from ground level to a position over his head, a vertical distance of 2.10 m. How much work does the weight lifter do, assuming he moves the
weights at constant speed?

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KEY TERMS 1. work (4.1) 2. joule 3. foot-pound 4. energy (4.2) 5. kinetic energy 6. potential energy 7. gravitational potential energy 8. conservation of total energy (4.3) 9. conservation of mechanical energy 10. power (4.4) 11. watt 12. horsepower 13. kilowatt-hour 14. alternative energy sources (4.6) 15. renewable energy sources For each of the following items, fill in the number of the appropriate Key Term from the preceding list. n. _____ Time rate of doing work
Work is equal to the force times the ___ distance through which the force acts. (4.1)
KEY TERMS 1. work (4.1) 2. joule 3. foot-pound 4. energy (4.2) 5. kinetic energy 6. potential energy 7. gravitational potential energy 8. conservation of total energy (4.3) 9. conservation of mechanical energy 10. power (4.4) 11. watt 12. horsepower 13. kilowatt-hour 14. alternative energy sources (4.6) 15. renewable energy sources For each of the following items, fill in the number of the appropriate Key Term from the preceding list. o. _____ The ability to do work