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?

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College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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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?

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