Timeline for Why doesn't a radial burn increase orbital energy?
Current License: CC BY-SA 3.0
6 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 1, 2016 at 0:14 | comment | added | Suzu Hirose | An object being lifted by an elevator has zero kinetic energy before it started moving. This site is rather entertaining for the lack of knowledge of very basic things and attempt to blindside people with specious claims. | |
| Sep 30, 2016 at 15:35 | comment | added | Lawrence B. Crowell | An object being lifted by an elevator moving at a constant velocity has constant kinetic energy. | |
| Sep 30, 2016 at 10:38 | comment | added | Suzu Hirose | An elevator lifting a mass first has to move it from a lower to a higher position. If it's moving then it has gained kinetic energy, which then turns to potential energy. This is very basic physics indeed. | |
| Sep 30, 2016 at 9:57 | comment | added | Lawrence B. Crowell | There is no possible way a thrust or force can change gravitational potential? So an elevator lifting a mass does not change its gravitational potential --- really? | |
| Sep 30, 2016 at 2:15 | comment | added | Suzu Hirose | If there is a force in a particular direction, the movement of the body will be in that direction. That's just Newton's law of motion. Your equation about F.dr doesn't make any sense. There is no possible way that any thrust or other force can increase the gravitational potential energy directly. That also makes absolutely no sense. The potential energy can only increase if the satellite moves higher, which means that some kinetic energy is converted to potential energy. | |
| Sep 30, 2016 at 1:20 | history | answered | Lawrence B. Crowell | CC BY-SA 3.0 |