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How Can “Weightless” Astronauts be Weighed?
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1.
1.For more information see P. A. Tipler and G. Mosca, Physics, 5th ed. (W. H. Freeman, 2004), pp. 100101.
2.
2.R. C. Morrison, “Weight and gravity—The need for consistent definitions,” Phys. Teach. 37, 5152 (Jan. 1999).
http://dx.doi.org/10.1119/1.880152
3.
3.P. Mohazzabi, “Why do we feel weightless in free fall?Phys. Teach. 44, 240242 (April 2006).
http://dx.doi.org/10.1119/1.2186237
4.
4.Documents from www.nasa.gov/mission_pages/station/science/experiments/Clinical-Nutrition-Assessment.html and www.terra.es/personal/flromera/como.htm#a5.
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/content/aapt/journal/tpt/50/1/10.1119/1.3670074
2011-12-27
2014-07-14

Abstract

In introductory physics courses, within the context of studying Newton's laws, it is common to consider the problem of a body's “weight” when it is in free fall. The solution shows that the “weight” is zero1 and this leads to a discussion of the concept of weight.2,3 There are permanent free-fall situations such as astronauts in a spacecraft orbiting the Earth, for example, the International Space Station. However, it is important for an astronaut's health to control any variations in his/her body mass while on the orbiting spacecraft. This paper examines the following scenario: How can astronauts be weighed while in free fall?

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Scitation: How Can “Weightless” Astronauts be Weighed?
http://aip.metastore.ingenta.com/content/aapt/journal/tpt/50/1/10.1119/1.3670074
10.1119/1.3670074
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