- #1

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What is the moment of inertia?

Wouldn't it just be the sum of the masses times the radius squared?

I = 1.36(.300)^2 + .8(.270(.300^2))

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- Thread starter Trojanof01
- Start date

- #1

- 13

- 0

What is the moment of inertia?

Wouldn't it just be the sum of the masses times the radius squared?

I = 1.36(.300)^2 + .8(.270(.300^2))

- #2

Doc Al

Mentor

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For the rim, yes; for the spokes, no. The mass of the rim is all at a single distance from the axis; not so for the mass of the spokes. Hint: Look up (or figure out) the moment of inertia of a thin rod about one end. (Treat the spokes as thin rods.)Wouldn't it just be the sum of the masses times the radius squared?

- #3

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Oh! /smack That made that so much more simple. Thanks much.

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