![Consider an elastic straight beam of length ๐ฟ = 10 ๐ m with square cross-section of side a = 5 mm and Youngโs modulus E = 200 GPa](https://www.gkseries.com/blog/wp-content/uploads/2023/08/Consider-an-elastic-straight-beam-of-length-๐ฟ-10-๐-m-with-square-cross-section-of-side-a-5-mm-and-Youngs-modulus-E-200-GPa.jpg)
Q. Consider an elastic straight beam of length ๐ฟ = 10 ๐ m, with square cross-section of side a = 5 mm, and Youngโs modulus E = 200 GPa. This straight beam was bent in such a way that the two ends meet, to form a circle of mean radius R. Assuming that Euler-Bernoulli beam theory is applicable to this bending problem, the maximum tensile bending stress in the bent beam is_____MPa.
![](https://www.gkseries.com/blog/wp-content/uploads/2023/08/Screenshot-670.png)
Sol:
By bending equation,
![](https://www.gkseries.com/blog/wp-content/uploads/2023/08/Screenshot-671.png)