(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

http://i241.photobucket.com/albums/ff4/alg5045/p13-17.gif

The four masses shown in the figure below are connected by massless, rigid rods.

(a) Find the coordinates of the center of mass if MA = 130 g and MB = MC = MD = 260 g.

(b) Find the moment of inertia about an axis that passes through mass A and is perpendicular to the page.

2. Relevant equations

I=mA(rA^2)+mB(rB^2).......

3. The attempt at a solution

I got part A as being .057 m for both x and y.

now wouldnt i use:

(.130*0)+(.260*.05^2)+(.260*.0707^2)+(.260*.05^2)

?? Its telling me my answer is wrong?!

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# Homework Help: Moment of Inertia problem?

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