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On the periods of a free-free bar immersed in water

Published online by Cambridge University Press:  24 October 2008

E. B. Moullin  and
A. D. Browne
E. B. Moullin
Affiliation:
Downing College
A. D. Browne
Affiliation:
Queens' College
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Extract

If a bar is vibrating under water it will set up circulating currents which possess kinetic energy and so in effect add to its inertia: consequently the frequency under water will be less than the frequency in air. The effect of the water is precisely the same as if the density of the bar had been increased: the apparent increase of mass is usually called the “added mass” of the bar and the total apparent mass the “virtual mass”, and these terms will be used subsequently.

Type
Research Article
Information
Mathematical Proceedings of the Cambridge Philosophical Society , Volume 24 , Issue 3 , July 1928 , pp. 400 - 413
Copyright
Copyright © Cambridge Philosophical Society 1928

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