Timeline for Relation between Work and K.E with friction
Current License: CC BY-SA 3.0
7 events
| when toggle format | what | by | license | comment | |
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| Oct 10, 2017 at 16:45 | comment | added | Imtiaz Raqib | I realized that last night and fixed it. Thank you so much for your help! :D | |
| Oct 10, 2017 at 16:44 | vote | accept | Imtiaz Raqib | ||
| Oct 10, 2017 at 13:04 | comment | added | FGSUZ | Nice fail. Well, the theorem above is right and the reasoning is primarily true. The thing is that the normal force is not that one. If you're pulling with a force at angle $\theta$, the force giving work to the $E_k$ is $F\cdot \cos \theta$ but the rest is $F\cdot\sin \theta$. This force acts in the vertical direction and it partially compensates the weight, so the normal force is not $mg$ but $mg-F\cdot \sin \theta$. | |
| Oct 10, 2017 at 3:32 | comment | added | Imtiaz Raqib |
When I check my answer, it says I am wrong. To put it better; F = 611 ; m = 69.9 ; θ = 36.3 ; μ = 0.139 ; d = 5.62 Plugging all that gives me 2230 J (Keeping sig digs in mind) and my portal says it is wrong.
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| Oct 6, 2017 at 20:48 | vote | accept | Imtiaz Raqib | ||
| Oct 10, 2017 at 3:49 | |||||
| Oct 6, 2017 at 18:23 | review | Low quality answers | |||
| Oct 6, 2017 at 18:42 | |||||
| Oct 6, 2017 at 18:06 | history | answered | FGSUZ | CC BY-SA 3.0 |