Timeline for Show that there are compressive forces in a static fluid not by arguing that there is no shear force
Current License: CC BY-SA 3.0
5 events
| when toggle format | what | by | license | comment | |
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| Aug 5, 2017 at 5:40 | comment | added | A Slow Learner | I tried but could not think of an example and I think that it is my problem: an indirect answer, like yours, though makes complete sense, gives me a hard time accepting. The same thing goes for textbooks. All of them that I have read only provide an example in which a shear stress is applied and the fluid moves and conclude that a fluid does not exert shear forces. However, none of them provide an example for normal stresses. Their conclusion about normal stresses is indirect just like yours. I just find it strange that nobody could provide a direct observation for that property of a fluid. | |
| Aug 5, 2017 at 3:33 | comment | added | Deep | @Geophysics You may un-accept the answer if you are not satisfied with it. May be you will get other answers. I am not sure what you mean by direct observation. How would you observe such a thing? We define fluids to be those that will deform continuously under shear stress. Can you think of a situation where compressive forces alone can set a fluid into continuous motion? | |
| Aug 4, 2017 at 18:23 | comment | added | A Slow Learner | I am still not completely satisfied with the answers though. Could you provide a direct observation leading to the conclusion that a fluid element will not move continuously under compressive forces? | |
| Aug 4, 2017 at 15:14 | vote | accept | A Slow Learner | ||
| Aug 4, 2017 at 6:44 | history | answered | Deep | CC BY-SA 3.0 |