Is this a center of mass question?

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SUMMARY

The discussion clarifies that the problem of finding the solid angle subtended at the origin by a thin circular disk of radius a, positioned at a distance b from the origin, is not related to center of mass calculations. Instead, it is strictly a geometrical problem focused on solid angles. Participants emphasize that understanding the geometric properties of the disk and its orientation is essential for solving the problem.

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jlmac2001
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Question: Find the solid angle subtended at the origin by a thin circular disk of radius a, whose cente is a distance b from the origin and where the normal to the disk is parallel.

Do I have to find the center of mass to solve this question?
 
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"is this a center of mass question?"

No, it's a "solid angle" question.

This question is purely geometrical, and has nothing to do with distriubtion of mass.
 
so...

how would I do it?
 

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