A vaulter holds a 29.2-N pole in equilibrium by exerting an upward force with her leading hand and a downward force with her trailing hand as shown...

A vaulter holds a 29.2-N pole in equilibrium by exerting an upward force with her leading hand and a downward force with her trailing hand as shown in the figure below. Point C is the center of gravity of the pole. (Let L1 = 2.25 m, L2 = 1.35 m, and L3 = 0.900 m.)