Question

A steel ring of radius r and cross sectional area 'A' is fitted on to a wooden disc of radius R (R > r). If the Young's modulus be Y, then what is the force with which steel ring is expanded?

• A. \(\frac{AYR}{r}\)
• B. \(\frac{AR}{Y_r}\)
• C. \(\frac{A}{Y}(\frac{r}{R-r})\)
• D. \(AY(\frac{R-r}{R})\)

Answer 1

The Correct Option is D

The correct option is (D): \(AY(\frac{R-r}{R})\)