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Pressure in Fluids

41.why volume...

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41.why volumetric stress is equal to change in pressure ?why is it not the final pressure?

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Q. Ratio of volumetric stress & volumetric strain is given by
[Take

(Δ P)

to be change in pressure,

V

as initial volume,

Δ V

as change in volume].

Q. Ratio of volumetric stress & volumetric strain is given by
[Take

(Δ P)

to be change in pressure,

V

as initial volume,

Δ V

as change in volume].

Q. If stress-strain relation for volumetric change is in the form

\frac{Δ V}{V_{0}} = K P

P

is applied uniform pressure, then

K

Q. Why do you think it is necessary to define a separate quantity called pressure? Why is defining only force not enough?

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