P$4$ Ans: a$)3\mathrm{.}3334510-6$m$4,1\mathrm{.}1667510-6$m$4,0,$ d$)|1000$N$/$m$|,|3000$N$/$m$|,|4000$N$/$m$|,|3000$N$/$m$|,|1000$N$/$m$|.$A hollow, open, thin wall cross$-$section with the dimensionsgiven in the figure is loaded with a shear force Sy $=666\mathrm{.}69$N$.$a$)$ obtain the Ixx, Iyy and Ixy,b$)$ derive five shear flow equations qi$($si$),$ one for each wall,c$)$ graph your own shear flow and its direction in this cross$-$section,d$)$ what are the maximum positive or maximum negativevalues of the shear flow in each wall?

P$4$ Ans: a$)3\mathrm{.}33345*{10}^{-6}{m}^4,1\mathrm{.}16675*{10}^{-6}{m}^4,0,$ d$)|1000\frac{N}{m}|,|3000$N$/$m$|,|4000$N$/$m$|,|3000$N$/$m$|,|1000$N$/$m$|.$

A hollow, open, thin wall cross$-$section with the dimensions given in the figure is loaded with a shear force $S_y=666\mathrm{.}69N.$

a$)$ obtain the $I_{},I_{yy}$ and $I_{xy},$

b$)$ derive five shear flow equations $q_i(s_i),$ one for each wall,

c$)$ graph your own shear flow and its direction in this crosssection,

d$)$ what are the maximum positive or maximum negative values of the shear flow in each wall?