Determine the speed (v) of the (50-mathrm{Mg}) mass when it is just over the top of the

Question:

Determine the speed $v$ of the $50-\mathrm{Mg}$ mass when it is just over the top of the steel post, if after impact, the maximum stress developed in the post is $550 \mathrm{MPa}$. The post has a length of $L=1 \mathrm{~m}$ and a cross-sectional area of $0.01 \mathrm{~m}^{2}$. Take $E_{\mathrm{st}}=200 \mathrm{GPa}, \sigma_{Y}=600 \mathrm{MPa}$.

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