PARTA

Determine the stiffness matrix $K$ for the frame shown below. Assume $"1"$ and $"3$ are pins. Take $E=200$GPa,$I=350{10}^{6}m{m}^4,A=15{10}^{3}m{m}^2$ for each member.

PART B

Determine the support reactions at pins"$1"$ and $"3".$ Take $E=200$GPa,$I=350x{10}^{6}m{m}^4,A=15{10}^{3}m{m}^2$ for each member. Using stiffness method