Force $P$ is applied at a joint $B$ of the above truss.

The members of the bar are cylindrical bars. $($You have to press "Begin" to be assigned numbers for P and D$)$

Hint: You can use the following incomplete Python code snippet in Colab to solve the problem:

import numpy as np

from scipy import linalg

P$=???$ # $($N$)$ #Plug in given value

$D=???$ # $($cm$)$ #Plug in given value

$,$ np$.$ sqrt $(2)/2],[0,1,-np.\frac{\sqrt[\phantom{2}]{2}}{2}],[0,1,0]$

print $($A$)$

$B=np*array([P,0,P])$

$x=l$ inalg. solve $(A,B)$

print $($X$)$

print $(x[2]$

Stress$=???$ # Fill in this line of code appropriately

print$(\text{'}$Stress$=\text{'},$ np$.$ round$($Stress$*1$e$-6,2),$ 'MPa' $)$

Force $P=1,738N$ is applied at a joint $B$ of the above truss.

If the cross$-$section of member $3$ has a diameter of $2\mathrm{.}3cm,$ what is the normal stress in member $3$ in units of MPa?