A steel ring of radius r and cross-sectional area A is fitted into a wooden disc of…
Physics · JEE Main · NTA Exams — Properties of Solids and Liquids
A steel ring of radius r and cross-sectional area A is fitted into a wooden disc of radius R (R > r). If the Young's Modulus is Y, then the force F with which the steel ring is expanded is
- \(\frac{\text { YAR }}{\mathrm{Y}}\)
- \(Y A\left(\frac{R-r}{r}\right)\)
- \(\frac{Y}{A}\left(\frac{R-r}{r}\right)\)
- \(\frac{Y_{r}}{A R}\)
Answer
(B) Y A ( R-r r )
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