(Solved): For each of the following problem, formulate the global stiffness matrix K, and determine the globa ...

For each of the following problem, formulate the global stiffness matrix $\mathrm{K}$, and determine the global equilibrium equations $[K]\{D\}=\{F\}$. For Problem 1 and 3 , solve the system of linear equilibrium equations you have derived and determine the nodal displacements, reactions at the supports, and nodal forces. Problem 3 (a) (b) Determine the nodal displacements, reactions at the supports, and nodal forces, given that $k_1=1000\mathrm{kN}/\mathrm{m},k_2=k_3=500\mathrm{kN}/\mathrm{m}$, and $P=2\mathrm{kN}$.