Timeline for Work done in raising an object to a height
Current License: CC BY-SA 4.0
11 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Dec 5, 2023 at 19:42 | comment | added | hft | So, like: $\int\vec F_{net, non-conservative}\cdot \vec {dx} = \Delta (T+U)$, where $T$ is the kinetic energy and $U$ is potential energy. | |
| Dec 5, 2023 at 19:40 | comment | added | hft | Total mechanical energy is a concept that depends on the relevant forces being conservative, since total mechanical energy is $T+U$ where $U$ is the potential energy and the conservative force is $-dU/dx$. So, yes, you can separate out the net work into conservative and non-conservative forces, the work done by the conservative forces give a contribution to the net work of $-\Delta U$ and the non-conservative forces can thus be said to change the "total mechanical energy" (since the net force changes the kinetic energy) | |
| Dec 5, 2023 at 19:36 | comment | added | Darth Vader | @hft that was what the first comment to question had said; I'm asking about "Work done by non conservative forces= Change in total mechanical energy" holds true or not? And thanks for the clarification. | |
| Dec 5, 2023 at 19:33 | comment | added | hft | "The work done on an object by a net force equals the sum of change in kinetic energy of the object and the potential energy acquired by the object..." No. This is wrong. It literally contradicts the well known work kinetic energy theorem. The blind are leading the blind over here... | |
| Dec 5, 2023 at 19:31 | comment | added | hft | (This answer is wrong, BTW) | |
| Dec 5, 2023 at 19:31 | comment | added | hft | The net force is the sum of all the forces acting on the body. The work done by the net force is the change in kinetic energy. | |
| Dec 5, 2023 at 19:29 | comment | added | Darth Vader | @hft how would you explain it then? | |
| Dec 5, 2023 at 19:28 | comment | added | hft | No, not right... | |
| Dec 5, 2023 at 19:25 | comment | added | Darth Vader | The way I understand it, we only have to include the work done by the non conservative forces while using said definition of work done, right? Also, I think you post half-a-URL after the first one. | |
| S Dec 5, 2023 at 19:21 | review | First answers | |||
| Dec 5, 2023 at 20:00 | |||||
| S Dec 5, 2023 at 19:21 | history | answered | PFBoy | CC BY-SA 4.0 |