For the beam

$$

sent

$$

e

$$

$$figure

$4$

$($

module

$\text{'}$

$$

lasticit

$$

:

$2$

$0$

$0$

$$GPa

$)$

$,$

$$d

$$

finish:

a

$)$

$$bending stresses at

$4$

$$corners of the straight section located

$$

e

$$

$$a distance of

$6$

$0$

$0$

$$mm

$$

$$from

l

$\text{'}$

extr

$$

mit

$$

$$free;

b

$)$

$$the position of the

$\text{'}$

neutral axis.