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The previous answer supplied was wrong.

First, let us clarify the question.

1. We are going to assume we have an axially symmetric object rotating about its axis of symmetry.

2. The object has uniform density.

3. Stress at any one point is radial only and only due to the mass along the same radial line.

4. Gravity is not part of this.

The problem then is equivalent to a chain rotating with one end tied to a fixed axis and its length extending perpendicular to the axis of rotation.

The force experienced by any link in the chain is due to the sum of the centripetal forces of all links further out.

Thus the closest link, or the link on the axis of rotation, feels the greatest stress.

So, the previous answer was correct in identifying the location but incorrect in the reasoning.

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12y ago

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