Use the method of the unit load $($or virtual work$)$ to determine the rotation or slope at the support B in the following beam. Take $EI=4500kN*m^2.$

Use the Unit Load Method $($or Principle of Virtual Work$)$ to determine the rotation $($or slope$)$ at the free end $D$ and at the support $C.$ The flexural stiffness of the beam is $EI=12,000k.f{t}^2.$

$3$ Use the unit load method $($or Principle of Virtual Work$)$ to determine the deflection ${}_A$ in inches at the free end $A$ of the following beam. The flexural stiffness $EI$ of the beam is $14,250k^{2}f{t}^2.$

$4$ The figure shows a beam with two overhangs and flexural stiffness $EI=1,600k.f{t}^2.$ Due to the two distributed loads, the beam deflects as shown in the figure to the right. Use the unit load method $($or Principle of Virtual Work$)$ to determine the rotation ${}_B($or slope$)$ at the left support $B$ of the beam.