The discussion revolves around the differences in force transmission between fluids and solids, particularly in the context of Pascal's law. Participants explore the mechanisms by which fluids transmit forces and why these mechanisms differ from those in solid bodies. The conversation includes theoretical considerations and questions about the fundamental behavior of particles in fluids.
Participants generally disagree on the assumptions regarding the behavior of fluids versus solids, with multiple competing views on how force transmission should be understood. The discussion remains unresolved, with no consensus reached on the fundamental mechanisms at play.
Participants express uncertainty about the application of Pascal's law and the underlying mechanics of force transmission in fluids. There are references to the need for a clearer understanding of the molecular behavior of fluids and the implications of shear stress and strain.
Why should a fluid behave like a solid? That assumption doesn't make any sense to me. It isn't a solid, so I wouldn't expect it to behave like one.D.R.U said:why fluid not behave like ideal solid body
DaleSpam said:Why should a fluid behave like a solid? That assumption doesn't make any sense to me. It isn't a solid, so I wouldn't expect it to behave like one.
Can you explain why you would think that a fluid should behave like a solid?
OK, my question stands. Why do you think force transfer should be the same in a fluid and solid?D.R.U said:I don't say that why fluid behave like solid...But I say that why force is transfer differently in fluid and solid...
Give answer how force transmit In fluid..?..if you know...DaleSpam said:OK, my question stands. Why do you think force transfer should be the same in a fluid and solid?
To me your expectation that they should be the same seems strange. If you can explain why you think that they should be the same, then I can probably help identify your mistaken assumption or reasoning.
It seems like this may be the misunderstanding that is causing your mistaken assumption. Sound waves propagate differently in solids and fluids. Specifically, fluids can have only longitudinal waves while solids can have both longitudinal and transverse waves. This is because in fluids shear stress is proportional to shear rate while in solids shear stress is negatively proportional to shear strain.D.R.U said:Consider ideal solid and ideal fluid.....okey
You may be know how sound (pressure wave) transmit in solid and fluid...same mechanism and this mechanism is of compression of particles body...so they manage force equal to apply force and transfer to next particle plane...
Mechanism is same if you consider ideal solid or liquid...
DaleSpam said:It seems like this may be the misunderstanding that is causing your mistaken assumption. Sound waves propagate differently in solids and fluids. Specifically, fluids can have only longitudinal waves while solids can have both longitudinal and transverse waves. This is because in fluids shear stress is proportional to shear rate while in solids shear stress is negatively proportional to shear strain.
The wave transfer mechanism is not the same and ideal fluids do not have transverse waves. This seems to be the key mistaken assumption. You will have to let go of your incorrect assumption before you can progress.D.R.U said:Wave transfer mechanism fundamentally same...
Fluid have also transverse wave at starting point...
sendonsanty said:It is because of the molecular composition of water.
russ_watters said:You aren't thinking the basic rules of dynamics that apply to rigid bodies don't apply to liquids, do you? F=ma, w=FD, etc? All apply equally to liquids.