The weight that will cause a wire of diameter d to stretch a given distance, for a fixed length of wire, is A) proportional to d. B) independent of what the length of the wire is. C) independent of d. D) proportional to d².

Question

Quizplus · Accepted Answer

The weight causing the wire to stretch is proportional to the cross-sectional area of the wire, which is π(d/2)^2, hence proportional to d^2.

The Weight That Will Cause a Wire of Diameter D