Timeline for Don’t you need the distance between the two carts?
Current License: CC BY-SA 4.0
19 events
| when toggle format | what | by | license | comment | |
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| Apr 9, 2020 at 7:13 | comment | added | BioPhysicist | @AlexanderYe Will update answer accordingly later | |
| Apr 9, 2020 at 1:55 | comment | added | Alexander Ye | I figured it out( if u want to see PM) | |
| Apr 9, 2020 at 1:46 | comment | added | Alexander Ye | I did it rigorously and ... found that while you gain energy from gravity you Lose energy from the collision... you get no where in comparing them because the exact angles are missing (there are square trig values). But Wait! Wasn’t there something about square sin values being negligible for values under 15 degrees or something? (Specifically when deriving wave formulas) | |
| Apr 9, 2020 at 1:43 | comment | added | Alexander Ye | did it rigorously and ... Okay, the system GAINS energy from gravity outside the system from Earth; but doesn’t the system LOSE kinetic energy after the collision too? Rigorously doing this gets no where without the exact angle because it uses trigonometric square values ... | |
| Apr 9, 2020 at 1:41 | vote | accept | Alexander Ye | ||
| Apr 8, 2020 at 23:09 | history | edited | BioPhysicist | CC BY-SA 4.0 |
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| Apr 8, 2020 at 23:04 | vote | accept | Alexander Ye | ||
| Apr 9, 2020 at 1:41 | |||||
| Apr 8, 2020 at 23:03 | comment | added | Alexander Ye | ! Yes okay I will try this rigorously | |
| Apr 8, 2020 at 23:00 | history | edited | BioPhysicist | CC BY-SA 4.0 |
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| Apr 8, 2020 at 22:57 | comment | added | BioPhysicist | @AlexanderYe Internal conservative forces cannot change the total mechanical energy. It can only convert potential energy to kinetic energy or vice versa | |
| Apr 8, 2020 at 22:55 | comment | added | Alexander Ye | I would argue the attraction is still relevant. | |
| Apr 8, 2020 at 22:54 | vote | accept | Alexander Ye | ||
| Apr 8, 2020 at 22:54 | |||||
| Apr 8, 2020 at 22:53 | comment | added | Alexander Ye | Oh, it increases. Though the direction that the carts are pushed also increases PE, so the total ME does not necessarily change (so why wouldn’t the attraction be important)? | |
| Apr 8, 2020 at 22:45 | history | edited | BioPhysicist | CC BY-SA 4.0 |
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| Apr 8, 2020 at 22:45 | comment | added | BioPhysicist | @AlexanderYe I cannot tell you the answer. The attraction between the carts is irrelevant. Think about what happens to the energy of a system when an external force does work on it. | |
| Apr 8, 2020 at 22:44 | comment | added | Alexander Ye | Because for all we know the mass of the carts could be really really huge, meaning there is significant gravitational PE when they are apart and pulled closer by earth’s gravity... | |
| Apr 8, 2020 at 22:43 | vote | accept | Alexander Ye | ||
| Apr 8, 2020 at 22:54 | |||||
| Apr 8, 2020 at 22:42 | comment | added | Alexander Ye | But does it Increase or Decrease the energy of the system? So far I have: | |
| Apr 8, 2020 at 22:41 | history | answered | BioPhysicist | CC BY-SA 4.0 |