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A metal ring of inner radius $r_{1}$ and cross-sectional area $‘ A ’$ is filed onto a wooden disc of radius $r_{2} > r_{1}$ . If $‘ Y ’$ is the young modulus of the metal then the tension in the ring is

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AYr2r1

AY(r2−r1)r1

Y(r2−r1)Ar1

Yr1Ar2

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detailed solution

Correct option is B

Increase in radius, ∆r=r2-r1;Youngs' modulus,Y=stressstrain=T/A∆r/r

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A metal ring of inner radius r1 and cross-sectional area ‘A’ is filed onto a wooden disc of radius r2>r1 . If‘Y’ is the young modulus of the metal then the tension in the ring is

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Ready to Test Your Skills?

free study material

A metal ring of inner radius $r_{1}$ and cross-sectional area $‘ A ’$ is filed onto a wooden disc of radius $r_{2} > r_{1}$ . If $‘ Y ’$ is the young modulus of the metal then the tension in the ring is