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On the Buoyancy of a Helium-Filled Balloon

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John E. Harriman

Department of Chemistry, University of Wisconsin—Madison, Madison, WI 53706

J. Chem. Educ., 2005, 82 (2), p 246

DOI: 10.1021/ed082p246

Publication Date (Web): February 1, 2005

Section:

History, Education, and Documentation

Abstract

It is shown by expansion of the exponential in the barometric formula that the forces due to pressure acting on a balloon are of the form (PV/RT)Mg and that results agree with those suggested by Archimedes principle. Einstein's equivalence principal provides an answer to what balloons will do in an accelerated car.

Keywords (Audience):

First-Year Undergraduate / General

Keywords (Domain):

Physical Chemistry

Keywords (Pedagogy):

Analogies / Transfer

Keywords (Subject):

Atmospheric Chemistry

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Received: August 03, 2009

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On the Buoyancy of a Helium-Filled Balloon

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Automatic Low-Cost Data Acquisition from Old Polarimetric Instruments

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