A cantilever beam of length 0.3 m is subjected to a uniformly distributed load \( C = 10 \, \text{kN/m} \), as shown in the figure. The bending (flexural) rigidity of the beam is 5000 Nm\(^2\). Neglecting the self-weight of the beam, the magnitude of beam curvature in m\(^{-1}\) at the fixed end is
