The Shear Modulus of Steel Is 8

Multiple Choice

The shear modulus of steel is 8.1 × 10¹⁰ N/m². A steel nail of radius 7.5 × 10^-4 m projects 0.040 m horizontally outward from a wall. A man hangs a wet raincoat of weight 28.5 N from the end of the nail. Assuming the wall holds its end of the nail, what is the vertical deflection of the other end of the nail?

A) 1.8 × 10^-3 m
B) 3.3 × 10^-2 m
C) 7.9 × 10^-6 m
D) 4.2 × 10^-4 m
E) 2.1 × 10^-5 m