Question

A higher value of flexural rigidity indicates:

• A. Lower stiffness and lower deflection
• B. Lower stiffness and higher deflection
• C. Higher stiffness and lower deflection
• D. Higher stiffness and higher deflection

Hint:

When evaluating beam materials and shapes for construction, higher flexural rigidity is desirable for structural elements that must endure significant loads without much bending.

Answer 1

The Correct Option is C

Understanding flexural rigidity.
Flexural rigidity is defined as the product of the elastic modulus and the moment of inertia of the cross-section about the bending axis. A higher value of flexural rigidity implies a material or beam can resist bending better, hence it has higher stiffness and experiences lower deflection under load.