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A 85 kg person stands on a scale. a.) What would be the scale readout? N- - mg (Express in Newtons, and as a multiple of the person's weight.) Now, find a general expression for the scale readout, in terms of the person's mass, acceleration, and/or g. Show that it can be used to get the answer for part a above, and then use it to get the answers for all of the following parts: b.) If the person stands on the scale in an elevator accelerating upwards at 1 m/s², what is the scale readout? mg N= (Does the person feel heavier or lighter than the "usual" of part a?) c.) If the person stands on the scale in an elevator accelerating downwards at 1 m/s², what is the scale readout? N= mg (Does the person feel heavier or lighter than usual?)

A 85 kg person stands on a scale. a.) What would be the scale readout? N- - mg (Express in Newtons, and as a multiple of the person's weight.) Now, find a general expression for the scale readout, in terms of the person's mass, acceleration, and/or g. Show that it can be used to get the answer for part a above, and then use it to get the answers for all of the following parts: b.) If the person stands on the scale in an elevator accelerating upwards at 1 m/s², what is the scale readout? mg N= (Does the person feel heavier or lighter than the "usual" of part a?) c.) If the person stands on the scale in an elevator accelerating downwards at 1 m/s², what is the scale readout? N= mg (Does the person feel heavier or lighter than usual?)

College Physics
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 85 kg person stands on a scale. a.) What would be the scale readout? |N=[ mg (Express in Newtons, and as a multiple of the person's weight.) Now, find a general expression for the scale readout, in terms of the person's mass, acceleration, and/or g. Show that it can be used to get the answer for part a above, and then use it to get the answers for all of the following parts: b.) If the person stands on the scale in an elevator accelerating upwards at 1 m/s², what is the scale readout? |N=[ .mg (Does the person feel heavier or lighter than the "usual" of part a?) c.) If the person stands on the scale in an elevator accelerating downwards at 1 m/s², what is the scale readout? mg (Does the person feel heavier or lighter than usual?) d.) If the person stands on the scale in an elevator accelerating downwards at 9.8 m/s2, what is the scale readout? N= mg (Does the person feel heavier or lighter than usual?) e.) In parts b-d, was the actual weight of the person different? Explain the difference between apparent weight and actual weight.
Transcribed Image Text:A 85 kg person stands on a scale. a.) What would be the scale readout? |N=[ mg (Express in Newtons, and as a multiple of the person's weight.) Now, find a general expression for the scale readout, in terms of the person's mass, acceleration, and/or g. Show that it can be used to get the answer for part a above, and then use it to get the answers for all of the following parts: b.) If the person stands on the scale in an elevator accelerating upwards at 1 m/s², what is the scale readout? |N=[ .mg (Does the person feel heavier or lighter than the "usual" of part a?) c.) If the person stands on the scale in an elevator accelerating downwards at 1 m/s², what is the scale readout? mg (Does the person feel heavier or lighter than usual?) d.) If the person stands on the scale in an elevator accelerating downwards at 9.8 m/s2, what is the scale readout? N= mg (Does the person feel heavier or lighter than usual?) e.) In parts b-d, was the actual weight of the person different? Explain the difference between apparent weight and actual weight.
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