Using the polar moment of inertia of the isosceles
Chapter 9, Problem 9.29(choose chapter or problem)
Using the polar moment of inertia of the isosceles triangle of Prob. 9.28, show that the centroidal polar moment of inertia of a circular area of radius r is \(\mathrm{p} r^{4} / 2\). (Hint: As a circular area is divided into an increasing number of equal circular sectors, what is the approximate shape of each circular sector?)
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