Timeline for Differentiating between the formulas for Static and Kinetic Coefficients of friction
Current License: CC BY-SA 4.0
7 events
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| Mar 1, 2021 at 19:22 | comment | added | Bob D | @levitopher What I am saying is if the coefficient of kinetic friction is less than static friction, then it is impossible for the object to remain still at 15 $^0$ yet move at constant velocity at 20$^0$. The latter angle has to be smaller (the point of my thought experiment). Oh well, I guess I'm interpreting the OP 's statement differently than you are. | |
| Mar 1, 2021 at 18:45 | comment | added | levitopher | Yeah this is a good answer, so I won't make another, but I also want to emphasize that the OP is asking about two different physical situations, which is why the direct comparison doesn't work. If $\mu_s=\tan\theta$ is the max angle before slipping, then $\mu_s>\mu_k$. If $\mu_k=\tan\theta$ for constant velocity, then still $\mu_s>\mu_k$ it's a different object or ramp. | |
| Mar 1, 2021 at 15:07 | history | edited | Bob D | CC BY-SA 4.0 |
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| Mar 1, 2021 at 12:15 | history | edited | Bob D | CC BY-SA 4.0 |
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| Mar 1, 2021 at 11:44 | history | undeleted | Bob D | ||
| Mar 1, 2021 at 11:43 | history | deleted | Bob D | via Vote | |
| Mar 1, 2021 at 11:43 | history | answered | Bob D | CC BY-SA 4.0 |