$9\mathrm{.}4$ Discussion

$9\mathrm{.}4\mathrm{.}1$ Where was superposition used in this laboratory exercise? Based on the results obtained, discuss the validity of the principle of superposition. As part of this discussion, indicate the limitations of this principle.

$9\mathrm{.}4\mathrm{.}2$ Discuss the differences between measured and computed values of strain. For example, consider the significance of the observed difference and suggest possible reasons for them.