During a flood, a rescue helicopter was used to lift a 79-kg person to safety. The person has an upward acceleration of 0.65 m/s? and is lifted from rest to a vertical istance of 13 m. (a) What is the tension on the cable? (b) What is the work done by the tension? (c) What is the work done by the person's weight? (d) What is the sneed of the person at 11 m? Use the work-energy theorem to find your answer. Two metal pellets, one with twice the mass of the other, are released from rest at she same height. The effects of air resistance on both are negligible. Which of these statements are true? Both have the same gravitational potential energy.

During a flood, a rescue helicopter was used to lift a 79-kg person to safety. The person has an upward acceleration of 0.65 m/s? and is lifted from rest to a vertical istance of 13 m. (a) What is the tension on the cable? (b) What is the work done by the tension? (c) What is the work done by the person's weight? (d) What is the sneed of the person at 11 m? Use the work-energy theorem to find your answer. Two metal pellets, one with twice the mass of the other, are released from rest at she same height. The effects of air resistance on both are negligible. Which of these statements are true? Both have the same gravitational potential energy.

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter7: Conservation Of Energy

Section: Chapter Questions

Problem 2CQ

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