Posted by **Mary** on Monday, November 3, 2008 at 1:03am.

A thin, uniform rod is bent into a square of side length a.

If the total mass is M , find the moment of inertia about an axis through the center and perpendicular to the plane of the square. Use the parallel-axis theorem.

Express your answer in terms of the variables M and a.

PLEASE HELP WITH A THOROUGH EXPLANATION PLEASE!!!

- Inertia -
**bobpursley**, Monday, November 3, 2008 at 5:04am
We may disagree on thorough explaination. I am not doing students work for them.

Look at the square. It has sides a/4, and M/4. Now if you look at it from the center, the moment of inertia could be calculated from the I of any of those rods, moved with the parallel axis theorm to the center (a distance of a/8), then multiplyied by 4 due to all the rods contribution.

I will be happy to critique your thinking or work. Repost if if you need help.

- Inertia -
**Mary**, Monday, November 3, 2008 at 1:21pm
so would I = ma^2? i am confused

- Inertia -
**jarded**, Tuesday, December 1, 2015 at 12:48am
billy

## Answer This Question

## Related Questions

- physics - Hi, can someone please help with this question. A thin, uniform rod is...
- Inertia - A thin, uniform rod is bent into a square of side length a. If the ...
- Physics - An object is formed by attaching a uniform, thin rod with a mass of mr...
- physics - A bullet with mass m and a velocity of v is shot perpendicular to the ...
- Physics - Two objects of different masses are joined by a light rod. a) Id the ...
- physics - An object is formed by attaching a uniform, thin rod with a mass of mr...
- science - show that the moment of inertia of a uniform rod of length L and mass ...
- physics - A thin non-uniform rod of length L=2.00 m and mass M=9.00 kg is free ...
- physics - The moment of inertia of thin uniform rod of mass i and length L about...
- physics - A thin, rigid, uniform rod has a mass of 2.60 kg and a length of 1.69 ...

More Related Questions