5. Prove that the differential equation for radial equilibrium in cylindrical coordinates of an element in a uniform thin disc rotating at rad/s and subjected to principal direct stresses or and o, is given by the following expression. 30- Of - da, dr = pw²r²

Elements Of Electromagnetics
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Prove that the differential equation for radial equilibrium in cylindrical coordinates of an element in a uniform thin disc rotating at ω rad/s and subjected to principal direct stresses σr and σɵ is givenby the following expression.

          σɵ-σr-rdσr/dr=pω^2r^2

 

 

5. Prove that the differential equation for radial equilibrium in cylindrical coordinates of an
element in a uniform thin disc rotating at o rad/s and subjected to principal direct stresses
ơ; and o, is given by the following expression.
da,
dr
Transcribed Image Text:5. Prove that the differential equation for radial equilibrium in cylindrical coordinates of an element in a uniform thin disc rotating at o rad/s and subjected to principal direct stresses ơ; and o, is given by the following expression. da, dr
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