Exercise $3($related to Lecture $3$: Potential energy$)$

The following matlab file is in Canvas:

exampbeam.m code to study $2$D Frame. The code solve the Example $2$ in Lecture $2$

$1$ Study the matlab code examplbeam.m$.$ Modify the code in order to study the frame below. Draw then $N,V$ and M diagram.

Use the following elements: $12,34,56,24,46$

$EA=120*{10}^{9}N,EI=120*{10}^{6}N{m}^2$

$2$ Modify the matlab code to study the same frame but with a different discretization, see below. Check that you get the same results.

Use the following elements: $12,34,45,67,78,25,58$