| Author | Message | ||
Nagfan_kkd Junior Artist Username: Nagfan_kkd Post Number: 586 Registered: 09-2009 Posted From: 117.200.16.170 Rating: N/A |
ee theddu ento  http://nagfanz.com/ | ||
Dts Junior Artist Username: Dts Post Number: 611 Registered: 08-2009 Posted From: 188.40.51.71 Rating: N/A |
By conservation of energy we mean energy changes it form but amount of energy is same. Again this is relative to an observer. E.g. For an observer standing under a coconut tree the coconut has PE as it falls down it gains KE and the amount of KE it gains is equal to amount of it's loss in PE neglecting other losses. But for an observer right on the middle of coconut tree the values of KE and PE differ due to his position, but KE+PE is different for different observers w.r.t position. కోటిపల్లికి దారడిగి కొండపల్లికి వెళ్తున్నావేమిటి? ...మనసు మార్చుకున్నాను! DTS "The digital experience" | ||
Vjavasi Comedian Username: Vjavasi Post Number: 1859 Registered: 11-2009 Posted From: 192.127.94.7 Rating: N/A |
if total energy is relative how it is conserved | ||
Vjavasi Comedian Username: Vjavasi Post Number: 1855 Registered: 11-2009 Posted From: 192.127.94.7 Rating: N/A |
If i am not wrong lagragian and other classical mathematical formalism are centered around accelaration(dynamic systems) which is same for all inertial frames..... | ||
Dts Junior Artist Username: Dts Post Number: 610 Registered: 08-2009 Posted From: 188.40.51.71 Rating: N/A |
The initiator's question is on KE. Secondly if you consider total energy (all forms of energy) the observer is also part of that energy. As long as the observer is not the part of the system it is relative. కోటిపల్లికి దారడిగి కొండపల్లికి వెళ్తున్నావేమిటి? ...మనసు మార్చుకున్నాను! DTS "The digital experience" | ||
Der_schuler Side Hero Username: Der_schuler Post Number: 4938 Registered: 01-2009 Posted From: 64.241.37.140 Rating: N/A |
remember as long as we are in the realm of classical mechanics.... | ||
Der_schuler Side Hero Username: Der_schuler Post Number: 4937 Registered: 01-2009 Posted From: 64.241.37.140 Rating: N/A |
False....KE and PE seperately are but the sum total is always conserved!!!! | ||
Ishan Side Hero Username: Ishan Post Number: 2576 Registered: 01-2009 Posted From: 68.90.244.232 Rating: N/A |
Yes, total and kinetic energies both are relative. Gaanamidi...nee dhyanamidi...dhyanamulo naa praanamidi...praanamaina mooga gunde raagamidi... | ||
Dts Junior Artist Username: Dts Post Number: 609 Registered: 08-2009 Posted From: 188.40.51.71 Rating: N/A |
Yes! Energy is also relative. It varies from observer to observer. Here one should remember that the basic question is that of relativity not about something being vector or scalar. కోటిపల్లికి దారడిగి కొండపల్లికి వెళ్తున్నావేమిటి? ...మనసు మార్చుకున్నాను! DTS "The digital experience" | ||
Subzero Side Hero Username: Subzero Post Number: 3849 Registered: 04-2008 Posted From: 59.93.66.33 Rating: N/A |
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Der_schuler Side Hero Username: Der_schuler Post Number: 4918 Registered: 01-2009 Posted From: 24.14.147.0 Rating: N/A |
very true...infact the idea of KE is in many ways misleading..... Study the priciple of least action which is a application of calculus of variations to the lagrangian and one can actually derive all the laws of motion from the principle of least action | ||
Vjavasi Comedian Username: Vjavasi Post Number: 1854 Registered: 11-2009 Posted From: 192.127.94.7 Rating: N/A |
then kinetic energy should have no seperate physical meaning | ||
Cocanada Moderator Username: Cocanada Post Number: 18199 Registered: 01-2008 Rating: N/A |
simpulu | ||
Der_schuler Side Hero Username: Der_schuler Post Number: 4917 Registered: 01-2009 Posted From: 24.14.147.0 Rating: N/A |
No....energy is a scalar and in not a vector......independent of the frame of reference, the energy of the moving object should be the same... the traditional intrepretation of KE is not a natural for dynamical systems...read the concept of a Lagrangian | ||
Vjavasi Comedian Username: Vjavasi Post Number: 1853 Registered: 11-2009 Posted From: 192.127.94.7 Rating: N/A |
we calculate kinetic energy using speed.....if speed is relative to observer...for an observer in train everything else he sees outside the train is moving with same velocity in opposite direction...can he use same 1/2*m*v2 for the outside world ...Is energy relative also?...if energy is not relative what is the absolute frame to calculate kinetic energy..... |