Problem $2.$ Using the above results, the following problem $3.$ Bite abo Interpret the problem with medium and boundary conditions.

Frame $(1)$: $A=1\mathrm{.}210-3m^2,I=410-8m4,L=4m,$

$(2)$: $A=1\mathrm{.}2{10}^{-3}{m}^2,L=4\sqrt[\phantom{2}]{2}ml$

$2\mathrm{.}1(5$ points$)$ How many degrees of freedom are there in frame element

$(1)$ and rod element $(2).$

Find the element strength matrix of $2\mathrm{.}2(5$ points$)$ elements $(1)$ and $(2)$ for the local coordinate system.

Describe the boundary conditions that apply to $2\mathrm{.}3(5$ point$)$ nodes $1,2,$ and $3.$

How many degrees of freedom is $2\mathrm{.}4(5$ points$).$

Find the element stiffness matrix of elements $(1)$ and $(3)$ for the whole coordinate system and find the whole stiffness matrix. $($When superimposing element stiffness matrices, pay attention to the position of the degrees of freedom.$)$

$2\mathrm{.}6(10$ points$)$ Substitute the boundary condition and solve the problem to find the displacement and angle at node $2.$

Find the reaction force and bending moment at $2\mathrm{.}7(10$ points$)$ node $1.$

$2\mathrm{.}8(10$ points$)$ Obtain the tensile $($or compressive$)$ load on the element

$(2).$ Please solve that problems on picture and explain detali