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Unformatted text preview: gd cos We are given that in an unknown fluid whose density is 3 2 w , where w is the density of water, the capillary rise is 4 15 times that of water. Thus, we are given h = 4 w w gd cos and 4 15 h = 4 3 2 w gd cos So, combining these two equations, we have 4 15 4 w w gd cos = 4 3 2 w gd cos = = 2 5 w Since the surface tension of water at 68 o F is w = 0.0050 lb/ft, the surface tension of the unknown fluid is = 0 . 0020 lb / ft...
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This note was uploaded on 02/09/2012 for the course AME 309 taught by Professor Phares during the Spring '06 term at USC.
 Spring '06
 Phares

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