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## Homework Statement

## Homework Equations

## The Attempt at a Solution

Comments

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hey, I am trying to figure out the moment of inertia with respect to various axis. I am, having trouble figuring out how to find out dm.

I know that dm = (rho)*t*dA, but i am having trouble figuring out the t*dA part. i tried using

t*dA = (pi)(r^2)/2

That didn't work. If some1 could help me figure this out i'd be much grateful.

Here is the picture of the disk

[URL=http://img165.imageshack.us/my.php?image=semidiskad3.png][PLAIN]http://img165.imageshack.us/img165/6294/semidiskad3.png[/URL] http://g.imageshack.us/img165/semidiskad3.png/1/ [Broken][/PLAIN]

## Homework Statement

## Homework Equations

## The Attempt at a Solution

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