Work is path independent under conservative force. I would certainly say the is a meaning of conservative force.(http://en.wikipedia.org/wiki/Conservative_force).Add friction come the system and great bye conservatism
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I recognize that in general, work is path dependent, yet is that still dependent for a conservative force? What room some examples of cases where work is dependent/independent of path?
dependent - PV work in part cases.independent - gravity pulling a rock down from a particular height come a reduced height
dependent - PV work in some cases.independent - gravity pulling a rock down from a particular height to a lower height
I would certainly doubt that PV work is conservative. The heat transfer wake up that division the conservative condition.
I would doubt the PV job-related is conservative. The heat transfer happens that breaks the conservative condition.
Conservative pressure should be transforming KE or PE energy. As soon as you start playing with internal energy(T) all occupational cannot be recovered. That"s the allude of 2nd termodynamic law. In other words, if work have the right to be transfered in non recovery form(friction or heat/temperature) climate it is no conservative.
I would doubt that PV job-related is conservative. The heat transfer wake up that division the conservative condition.
Agree. Adiabatic process is conservative. However that is the just one line in PV diagram. Step away from this heat in you shed conservation.
i read in EK that "technically" heaviness does not work, and also further, the no conservative pressure actually does any type of work because the mechanical energy is conserved. That is, the amount of PE and KE is conserved. On the mcat, can we assume that gravity and also other conservative forces DO do work, and that this work is the readjust in KE even if the full mechanical power doesnt change?
i check out in EK the "technically" gravity does not work, and also further, that no conservative pressure actually does any kind of work because the mechanical power is conserved. The is, the sum of PE and KE is conserved. ~ above the mcat, have the right to we assume that gravity and also other conservative forces DO carry out work, and also that this job-related is the change in KE also if the complete mechanical power doesnt change?
right but EK says that conservative forces have no readjust in mechanical energy. Mechanical energy is PE to add KE. So space you defining work not as change in mech power but readjust in KE? on 2nd thought, go ANYONE define is at a adjust in mech energy, or would certainly that be incorrect?
right but EK claims that conservative forces have no readjust in mechanical energy. Mechanical energy is PE to add KE. So are you specifying work no as adjust in mech power but readjust in KE? on 2nd thought, go ANYONE specify is in ~ a readjust in mech energy, or would that be incorrect?
the work energy theorem specifically refers to kinetic energy. I mean, the whole definition of conservative force explicitly is defined by no adjust (i.e. Conserved) in mechanical energy
Agree. Adiabatic procedure is conservative. Yet that is the just one heat in PV diagram. Action away native this line in you shed conservation.
No.Adiabatic line on PV diagram because that gas. As soon as there is no warm exchange with environment. Let see does photo link works (green heat there)
right however EK states that conservative pressures have no change in mechanical energy. Mechanical energy is PE plus KE. So room you specifying work not as change in mech power but adjust in KE? on 2nd thought, go ANYONE define is at a readjust in mech energy, or would that be incorrect?
1. Work-related is F * dX (always)2. Adjust in KE may be equal work-related or might not. (depends)Now the tough part.If pressure belong to the same nature as potential energy. (Gravity force in heaviness field) then PE+KE=const and also work the this force changes PE to KE.However if force is outsider (space rocket fuel in gravity field) then job-related will readjust PE+KE. And also d(PE+KE) = F*dS HTH
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