Tension in the Ring!

A ring of mass mm, radius RR, cross sectional area AA and Young's modulus YY is kept on a smooth cone of radius 2R2R and semi vertical angle 45°45°, as shown in the figure. Assume that the extension in the ring is small :-

(A)(A) The tension in the ring will be same throughout.

(B)(B) The tension in the ring will be independent of the radius of ring.

(C)(C) The extension in the ring will be mgRAY\frac{mgR}{AY}

(D)(D) Elastic potential energy stored in the ring will be m2g2R8πYA\frac{m^2g^2R}{8\pi YA}

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