Numerical - Moment of inertia on a circle, given diameter

Q.  What is the moment of inertia acting on a circle of diameter 50 mm?
- Published on 21 Sep 15

a. 122.71 x 103 mm4
b. 306.79 x 103 mm4
c. 567.23 x 103 mm4
d. 800 x 103 mm4

ANSWER: 306.79 x 103 mm4

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    Discussion

  • Sravanthi   -Posted on 24 Nov 15
    Moment of inertia acting on a circle is given as (π/64) D4, here D is the diameter of circle.

    Given: Diameter of circle = 50 mm

    Solution:

    Substituting the value of D =50 mm, we get

    (π/64) D4

    = (π / 64) (504)

    = 306.79 x 103 mm4

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