A very lightweight horizontal loop of wire is suspended from a fine spring, lowered into water, and then raised to the surface. Any further attempt to raise it causes the spring to
A)stretch.
B)contract.
C)stay the same.

Question

Quizplus · Accepted Answer

When the loop is raised to the surface of the water, the surface tension of the water acts to pull the loop back down, effectively increasing the load on the spring. This causes the spring to stretch further if an attempt is made to raise the loop higher.

A Very Lightweight Horizontal Loop of Wire Is Suspended from a Fine