Question

select the correct answer. what is the primary force that helps suspension bridges use cables to hold their spans up? a. tension force b. resistance force c. normal force d. elastic force e. applied force

Explanation:

In suspension bridges, cables are under tension as they are stretched to support the weight of the bridge spans. Tension force is the primary force that allows the cables to hold the spans up. Resistance force is related to opposing motion, normal force is perpendicular to a surface, elastic force is related to deformation and return to original shape, and applied force is an external - imposed force. None of these other forces are the main force in cable - supported spans like in suspension bridges.

Answer:

A. tension force