(a) A uniform metal bar has a cross sectional area of $700 \mathrm{~mm}^{2}$ and a length 1.5 m with an elastic limit of $160 \mathrm{~N} / \mathrm{mm}^{2}$, What is its proof resilience? Find also the maximum value of an applied load which may be suddenly applied without exceeding elastic limit $E=2 \times 10^{5} \mathrm{~N} / \mathrm{mm}^{2}$.
Explanation
The equations for proof resilience and maximum value of an applied load are widely used in the design of structures and components subject to static loads.
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