A courier is delivering a 5 kg package to an office high in a tall building. (a) What upwards force does the courier apply to the pack- age when carrying it horizontally at a constant velocity of 2 m s−1 into the building? (b) The courier uses the elevator to reach the office. While the elevator (containing the courier who is holding the package) is accelerating upwards at 0.11 m s−2 what upwards force is the courier applying to the package? (c) When the elevator is traveling upwards at a constant speed of 6 m s−1 what upwards force does the courier apply to the package? (d) In order to stop at the correct floor the elevator accelerates downwards (decelerates) at a rate of 0.20 m s−2. What is the upwards force the courier applies to the package during the deceleration?

A courier is delivering a 5 kg package to an office high in a tall building. (a) What upwards force does the courier apply to the pack- age when carrying it horizontally at a constant velocity of 2 m s−1 into the building? (b) The courier uses the elevator to reach the office. While the elevator (containing the courier who is holding the package) is accelerating upwards at 0.11 m s−2 what upwards force is the courier applying to the package? (c) When the elevator is traveling upwards at a constant speed of 6 m s−1 what upwards force does the courier apply to the package? (d) In order to stop at the correct floor the elevator accelerates downwards (decelerates) at a rate of 0.20 m s−2. What is the upwards force the courier applies to the package during the deceleration?

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter5: Displacement And Force In Two Dimensions

Section: Chapter Questions

Problem 8STP

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