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Temperature, energy and gravity

  • 02-01-2014 4:16pm
    #1
    neufneufneuf
    Registered Users, Registered Users 2 Posts: 321 ✭✭


    I would like to know if the planet want to turn in other direction when I put a system like in this image (it's a theoretical problem) ? The planet don't turn around itself and I imagine the atmosphere stable. Like the big circle can recover energy from temperature (and like it's not possible in physics) the planet must turn in other direction or something else must happens for cancel this possibility, no ? Big circle is without mass. I imagine the red point like big gravity (like the Sun) for allow the planet turn around red point.

    Maybe it's possible to add a little solid (orange) for compensate the lack of gas (second image). Or gas but without temperature.


Comments

  • #2
    neufneufneuf
    Registered Users, Registered Users 2 Posts: 321 ✭✭neufneufneuf


    This don't change the temperature because gas accelerating is the same than gas decelerating. But I don't find where if the force that cencel the torque. Do you have any idea ?

    I build an analogy with centripetal forces. All the system turn around red point. No gravity here. A sphere (or a cylinder, second image) full with liquid turn at x rd/s. The rotation change the pressure forces with the radius. I place the same system than before. Torque must be to 0 and it must be Fz*Rz = Fr*Rr but it is already the case with a fixed pressure, here the pressure is not the same. The term Fr*Rr is lower due to the reduced pressure. So how can I find 0 ? I think it's possible to limited friction like third image showing (section view) for the sphere so the problem must come from the torque.


  • #3
    neufneufneuf
    Registered Users, Registered Users 2 Posts: 321 ✭✭neufneufneuf


    The equivalent with gravity must be more like that I think. All turn at x rpm like that no friction and no movement of liquid. Orange shape turn with liquid at x rpm. The thickness of orange shape is constant. Like it's all the system that change its slope, I think it's in other plane due to the gyroscopic effect. I put liquid but it's possible to think with gas with temperature. The orange shape must have density near 0, like that there is no centripetal force for compensate the force F. If the force F (last image) exist and can't be compensate by part of circle, what is the force that prevent the system to turn around axis ?


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