9.4-4 A simple beam with a uniform load is pin-supported at one end and spring-supported at the other. The spring has stiffness k = 48EI/L^3. Derive the equation of the deflection curve by starting with the third-order differential equation (the shear-force equation). Also, determine the angle of rotation θ at support A.
b
B
A
x
48EI
k = 13
PROB. 9.4-4