Using the polar moment of inertia of the isosceles triangle of 9.28, show that the

Chapter 9, Problem 9.29

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Using the polar moment of inertia of the isosceles triangle of 9.28, show that the centroidal polar moment of inertia of a circular area of radius r is 4/2. r (Hint: As a circular area is divided into an increasing number of equal circular sectors, what is the approximate shape of each circular sector?) PROBLEM 9.28 Determine the polar moment of inertia and the polar radius of gyration of the isosceles triangle shown with respect to Point O.

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