Energy cannot be destroyed, so where are the energy goes due to non-conservative forces? If the energy due to non-conservatve forces converted to other form, how can we know where it goes? How if it converted into heat, where the heat goes? Are all the heat naturaly travel through air and indirectly affect weather? If so, that heat indirectly vaporize water and the rain is created. Then rain create river and the water goes back to the dam. cmiiw But how about converted into sound? I am curious about energy cycle 🤔
I'll try to explain some of the facts to cover for your asked questions as per the sequence : 1. Yes, energy can not be destroyed. Is it only energy ? Definitely no. It is overall energy which is never gets destroyed. But definitely yes, if mechanical energy. Mechanical energies are the combination of only two energies - Kinetic & Potential which are actually associated with body's motion. Many of the us have a confusion that strain & sound energies too are one of the mechanical energy. But that's a misnomer. Because, in any motion dynamics problem, there is always some finite deformation though it may be negligible & always prone to produce sound though it is very weak. And what about friction ? As it can never be neglected. So, in short, these non- conservative forces are consuming some part of mechanical energy to produce these kinds of energies like frictional rub, sound & strain. But here, mostly frictional loss is the only form of energy considered which is contribution from work done by non- conservative forces. As deformation & sound energies whether they are useful or not depends upon the perception made behind any particular application problem. So they can't be considered to be by non- conservative forces all time. But if friction, then ultimately yes. Because, it is the most irreversible form of energy which directly connects with heat which is the low grade of energy by the second law of thermodynamics. 2. If we wants to know about energy consumed by non- conservative forces then it is simple to compare the initial energy content in the body in the form of kinetic & potential (mechanical energy as per previous point discussed) with the final energy content based on the reference limits you will consider for applying law of conservation of energy. For final point, if you gets the initial mechanical energy is not same but something extra effects are experienced like - • Finite rise in temperature of the body, • Finite deformation or strains in the body, • Or some noise intensity produced. These above extra effects are the sign of presence of consumption of initial mechanical energy to other forms of energy in the form of heat, strain or sound respectively. But mostly for rigid bodies, only frictional generated heat is considered to be the work done by non- conservative forces & relatively other rest of two effects may be ignorable. But all this depends on that particular application circumstances. 3. If it is converted into heat, it simultaneously gets transferred to the immediate surrounding interfaced body surfaces to increase their temperatures locally. The region of being gets affected is based on many other factors like time scale of heat transfer or heat flux, geometric magnitudes of the exposed surfaces & relatively bulk volume of the involved bodies, their specific heat, thermal conductivity etc. 4. Even if it (heat) naturally travels through air, it affects it locally in the air & it has nothing to do significantly in the whole whether which is very large scale space of air as compared to the scale of application involved. 5. It will never affect & has nothing to do with the subsequent activities like rainfall & all. As these phenomena are not artificially occured. These phenomena involves the radiative heat action from sun which is the biggest source of heat energy in this universe. Not only heat transfer but for the process of whether phenomena & rainfalls, the thermodynamics of phases, saturation pressures & temperatures, etc concepts are role playing here. 6. As dams are designed to be the sufficient accumulators for the storage of the water as a purpose of achieving the great potential energy to convert possibly to Kinetic energy for running power plants & other auxillary applications. The rivers are produced from the continuous rainfall from mountains with high potential energies to achieve a great & sufficient kinetic energies over large possible distances & in order to win & compensate over the local by local losses due to friction & noise of water with land constituents like obstacles, stones, turns & many more in the river stream path. Sorry for long answer but hope, you will get some basic idea about your doubts.
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Thanks this helped me alot
Where did the big bang energy come from then? Does conservation of energy disprove big bang?
Wait where did u get the square root of both sides from
thanks
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Energy cannot be destroyed, so where are the energy goes due to non-conservative forces? If the energy due to non-conservatve forces converted to other form, how can we know where it goes?
How if it converted into heat, where the heat goes? Are all the heat naturaly travel through air and indirectly affect weather? If so, that heat indirectly vaporize water and the rain is created. Then rain create river and the water goes back to the dam. cmiiw
But how about converted into sound? I am curious about energy cycle 🤔
I'll try to explain some of the facts to cover for your asked questions as per the sequence :
1. Yes, energy can not be destroyed. Is it only energy ? Definitely no. It is overall energy which is never gets destroyed. But definitely yes, if mechanical energy. Mechanical energies are the combination of only two energies - Kinetic & Potential which are actually associated with body's motion. Many of the us have a confusion that strain & sound energies too are one of the mechanical energy. But that's a misnomer. Because, in any motion dynamics problem, there is always some finite deformation though it may be negligible & always prone to produce sound though it is very weak. And what about friction ? As it can never be neglected. So, in short, these non- conservative forces are consuming some part of mechanical energy to produce these kinds of energies like frictional rub, sound & strain. But here, mostly frictional loss is the only form of energy considered which is contribution from work done by non- conservative forces. As deformation & sound energies whether they are useful or not depends upon the perception made behind any particular application problem. So they can't be considered to be by non- conservative forces all time. But if friction, then ultimately yes. Because, it is the most irreversible form of energy which directly connects with heat which is the low grade of energy by the second law of thermodynamics.
2. If we wants to know about energy consumed by non- conservative forces then it is simple to compare the initial energy content in the body in the form of kinetic & potential (mechanical energy as per previous point discussed) with the final energy content based on the reference limits you will consider for applying law of conservation of energy. For final point, if you gets the initial mechanical energy is not same but something extra effects are experienced like -
• Finite rise in temperature of the body,
• Finite deformation or strains in the body,
• Or some noise intensity produced.
These above extra effects are the sign of presence of consumption of initial mechanical energy to other forms of energy in the form of heat, strain or sound respectively. But mostly for rigid bodies, only frictional generated heat is considered to be the work done by non- conservative forces & relatively other rest of two effects may be ignorable. But all this depends on that particular application circumstances.
3. If it is converted into heat, it simultaneously gets transferred to the immediate surrounding interfaced body surfaces to increase their temperatures locally. The region of being gets affected is based on many other factors like time scale of heat transfer or heat flux, geometric magnitudes of the exposed surfaces & relatively bulk volume of the involved bodies, their specific heat, thermal conductivity etc.
4. Even if it (heat) naturally travels through air, it affects it locally in the air & it has nothing to do significantly in the whole whether which is very large scale space of air as compared to the scale of application involved.
5. It will never affect & has nothing to do with the subsequent activities like rainfall & all. As these phenomena are not artificially occured. These phenomena involves the radiative heat action from sun which is the biggest source of heat energy in this universe. Not only heat transfer but for the process of whether phenomena & rainfalls, the thermodynamics of phases, saturation pressures & temperatures, etc concepts are role playing here.
6. As dams are designed to be the sufficient accumulators for the storage of the water as a purpose of achieving the great potential energy to convert possibly to Kinetic energy for running power plants & other auxillary applications. The rivers are produced from the continuous rainfall from mountains with high potential energies to achieve a great & sufficient kinetic energies over large possible distances & in order to win & compensate over the local by local losses due to friction & noise of water with land constituents like obstacles, stones, turns & many more in the river stream path.
Sorry for long answer but hope, you will get some basic idea about your doubts.
Love your vids :)
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