Explain the need for tall towers on a suspension bridge to ensure stable equilibrium

suspension-bridge
stable-equilibrium

#1

Explain the need for tall towers on a suspension bridge to ensure stable equilibrium.

Answer:

The taller the towers, the greater the curvature in the parabolic shape of the suspension wire. The lateral component of the reaction force at the towers due to the tension in the wires is reduced and the load path is mainly axial through the towers and transmitted in bearing to the foundations.