The following is a force−extension graph for strips of materials A, B, C and D, each
Having initially the same cross-sectional area and length. When the strip is used as a cantilever, which one will sag the most when force F is applied to the free end?
A) A
B) B
C) C
D) D

Question

Quizplus · Accepted Answer

Material D will sag the most because it has the lowest Young's modulus, which means it is the least stiff and most flexible. The graph shows that at the same applied force, material D is able to extend the most, indicating that it will sag the most when used as a cantilever.

The Following Is a Force−extension Graph for Strips of Materials