Timeline for Which fundamental force is behind friction?
Current License: CC BY-SA 3.0
11 events
| when toggle format | what | by | license | comment | |
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| Dec 13, 2018 at 8:31 | comment | added | Brain90 | Friction is, on the microscopic level, actually an electromagnetic interaction. Of the four "fundamental forces" of nature (strong and weak nuclear, electromagnetic, and gravitational) friction is actually due to electromagnetic interaction between the atoms at the contact surfaces. scienceline.ucsb.edu/getkey.php?key=167 | |
| Oct 16, 2018 at 14:51 | vote | accept | Shivanshu Kant Prasad | ||
| Oct 16, 2018 at 11:36 | comment | added | FGSUZ | @ShivanshuKantPrasad yes, atoms are neutral, but they are not points, they have some volume. Since the possitive and the negative charges are separated, it might be globally neutral, but when you come closer you start detecting an electric dipole and higher order terms, which do exert forces. | |
| Oct 16, 2018 at 9:32 | history | edited | Qmechanic♦ |
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| Oct 16, 2018 at 9:21 | answer | added | Mechanic | timeline score: 2 | |
| Jun 16, 2016 at 10:48 | comment | added | John Rennie | Not exactly a duplicate, but see my answer to How is frictional force dependent on normal reaction? | |
| Jun 16, 2016 at 9:23 | comment | added | RedGrittyBrick | What does it mean for two objects to touch? | |
| Jun 16, 2016 at 5:40 | comment | added | Shivanshu Kant Prasad | But atoms are generally neutral then how is there an electromagnetic force acting at atomic level between atoms. | |
| Jun 16, 2016 at 3:44 | comment | added | Shashaank | Its the electromagnetic force. The 2 bodies between which there is some friction always have some irregularities on their surface. They are never perfectly smooth. To understand, we say that these irregularities fit in each other. Actually due to these irregularities the distance on atomic scale decreases and the electromagnetic force increases thereby giving rise to friction. If we smoothen the surfaces , the friction will decrease till a certain point. After which the friction increases incredibly. Think why | |
| Jun 16, 2016 at 2:48 | comment | added | Diracology | Electromagnetic interaction. | |
| Jun 16, 2016 at 2:47 | history | asked | Shivanshu Kant Prasad | CC BY-SA 3.0 |