In Fig. 12-49, a lead brick rests horizontally on cylinders A and B. The areas of the top faces of the cylinders are related by AA = 2.4 AB; the Young's moduli of the cylinders are related by EA = 2.2 EB. The cylinders had identical lengths before the brick was placed on them. What fraction of the brick's mass is supported (a) by cylinder A and (b) by cylinder B? The horizontal distances between the center of mass of the brick and the centerlines of the cylinders are dA for cylinder A and dB for cylinder B. (c) What is the ratio dA /dB?(adsbygoogle = window.adsbygoogle || []).push({});

So since I don't know how to post the picture, i'll just describe it. There is a silver block placed on top of cylinder A on the left and cylinder B on the right. A has a larger diameter than B. The com of mass is labeled in between cylinder A and B, but a little bit closer to B. Two lines are drawn, one connecting the center of cylinder A to the center of mass of the brick, labelled d subscript A. There is another line drawn from cylinder B to the bricks center of mass labelled d subscript B.

Now for this problem, I do not even know where to start. I think that I am supposed to use the equation F/A = E ( change in L/L). I have no clue how to use this equation though, but it is the only one that is relevant to the problem. So also, could you explain this equation, because I have no clue how to use. Thank you for the help

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# Homework Help: Equilibrium/ Young's Moduli

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