Timeline for Will pure rolling occur if the body encounters a frictionless surface during its motion?
Current License: CC BY-SA 3.0
7 events
| when toggle format | what | by | license | comment | |
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| Feb 26, 2018 at 20:35 | comment | added | Tom B. | Ha! Well said, my friend. Well said. | |
| Feb 26, 2018 at 20:33 | comment | added | Steeven | @TomB. True (I'm wondering how "perfectly smooth" and "non-frictionless" can go together :) ) | |
| Feb 26, 2018 at 20:17 | comment | added | Tom B. | Right, but even for an ideal, perfectly smooth, non-frictionless surface, that friction plays no role on a horizontal surface with no acceleration. I'm not sure how ideal the OP assumes the situation is. It's unusual to consider friction problems in ideal situations. | |
| Feb 26, 2018 at 20:08 | comment | added | Steeven | @TomB. No, in the case of an ideal, perfectly smooth, frictionless surface, there would be no static friction. That is the reason the wheel could free-spin and stop following the surface on the last paragrpah. Static friction is what holds the contact point still, but it can't do that without at least some friction. If you drive up a hill, then your wheels experience pure rolling but a large static friction is pulling upwards in order to hold back against gravity, so that the contact point does not slip and slide. | |
| Feb 26, 2018 at 20:02 | comment | added | Tom B. | nevermind, I guess that's what you mean in the last sentence. | |
| Feb 26, 2018 at 19:54 | comment | added | Tom B. | "There can be plenty of static friction in order to hold that contact point still." Is this true for the ideal conditions in the OP post? | |
| Feb 26, 2018 at 19:30 | history | answered | Steeven | CC BY-SA 3.0 |