Timeline for How is energy conserved in terms of "Work"
Current License: CC BY-SA 4.0
7 events
when toggle format | what | by | license | comment | |
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Oct 2, 2019 at 11:14 | vote | accept | VVC | ||
Oct 2, 2019 at 11:14 | vote | accept | VVC | ||
Oct 2, 2019 at 11:14 | |||||
Oct 2, 2019 at 5:33 | comment | added | BowlOfRed | @Patrick the total energy burned by the fuel goes into increasing the KE of both the rocket and the fuel. physics.stackexchange.com/questions/428952/… | |
Oct 2, 2019 at 3:31 | comment | added | Bob D | Too many rocket scenarios to respond to in comments format. But just because fuel is burned doesn’t mean work it has to be accounted for as work, PE or KE | |
Oct 2, 2019 at 2:59 | comment | added | VVC | Thanks for the reply! But consider the cases of rocket for scenario 2 and 3 starting at the instant net force is 0. For scenario 2, energy is stored in gav-PE and rocket will be held mid air. For scenario 3, the rocket has both PE and KE at h. Lets consider fuel for propulsion as chemical potential energy. For case 2, fuel will burn (Chem PE decreases) while grav-PE and KE doesn't change. For case 3, chem-PE decreases while grav-PE increases and KE remains. So how is this discrepancy explained? Where does energy go for scenario 2? Thanks again! | |
Oct 2, 2019 at 2:38 | history | edited | Bob D | CC BY-SA 4.0 |
added 6 characters in body
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Oct 2, 2019 at 2:32 | history | answered | Bob D | CC BY-SA 4.0 |