A cable stretches by an amount d when it supports a crate of mass M. The cable is then cut into three equal pieces. If the same crate is supported by any one of these pieces, by how much will the cable stretch?
A)d
B)d/3
C)d/6
D)3d
E)9d

Question

Quizplus · Accepted Answer

Since the cable is cut into three equal pieces, each piece will have one-third of the original cable's length. Therefore, if the same crate is supported by any one of these pieces, the cable will stretch by one-third of the original amount, which is d/3.

A Cable Stretches by an Amount D When It Supports