Figure $1.$ A simple truss, with $2$ supports and $1$ concentrated external load.

Problem $1$

Consider the simple truss sketched in Figure $1.$ The lengths $l$ and $h$ are equal to $3ft$ and $4$

$ft,$ respectively. The external load has magnitude $F=130lbf$ and its line of action is at and

angle $=22\mathrm{.}6$ with the vertical direction.

a$.$ Verify that the truss is statically determinate.

b$.$ Calculate all the support reactions, and the internal forces for all the truss members.