Timeline for Can someone help me with differential equation please?
Current License: CC BY-SA 4.0
9 events
| when toggle format | what | by | license | comment | |
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| Apr 22, 2023 at 21:27 | comment | added | James | @Michael <html><script> let G = 0.0000000000667408; let m = 0.142; let min_distance = 0.074; let t = 0; let a1 = 0; let v1 = 0; let p1 = 0; let a2 = 0; let v2 = 0; let p2 = 1; while (p2 - p1 > min_distance) time_step(); document.write ("t: " + t/3600/24); function time_step () { let r = p2 - p1; a1 = Gm/(rr); a2 = -a1; v1 += a1; p1 += v1; v2 += a2; p2 += v2; t++; } </script></html> | |
| Apr 22, 2023 at 21:26 | comment | added | James | @Micheal I'm sorry i did not save the excel unfortunately, but the solution 2.93 was not actually using spreadsheet (because of number of row limitations won't let us go that far). Here's a javascript code for it: | |
| Apr 22, 2023 at 16:05 | comment | added | Ghoster | @James 2.93 days This agrees with the analytic formula. | |
| Apr 22, 2023 at 14:33 | comment | added | Michael | @James hi, can I have your excel file please ? I'm not very good at excel | |
| Apr 22, 2023 at 11:41 | comment | added | James | The balls separated by 1 meter will hit each other in 2.93 days. The earth and the sun in the same situation will hit in 65.05 days. | |
| Apr 22, 2023 at 5:44 | history | edited | James | CC BY-SA 4.0 |
deleted 47 characters in body
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| Apr 22, 2023 at 5:23 | comment | added | James | @ghoster oh yes, the acceleration must be recalculated every step. i will update. | |
| Apr 22, 2023 at 5:20 | comment | added | Ghoster | You haven’t shown the Excel formulas for the velocity or position. Are you using the acceleration calculated in B4? If so, that’s only the initial acceleration. | |
| Apr 22, 2023 at 5:06 | history | answered | James | CC BY-SA 4.0 |