The shear modulus of steel is \( 8.1 \times 10^{10} \mathrm{~N} / \mathrm{m}^{2} \). A steel nai...
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The shear modulus of steel is \( 8.1 \times 10^{10} \mathrm{~N} / \mathrm{m}^{2} \). A steel nail of radius \( 7.5 \times 10^{-4} \mathrm{~m} \) projects \( 0.040 \mathrm{~m} \) horizontally outward from a wall. A man hangs a wet raincoat of weight \( 28.5 \mathrm{~N} \) 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) \( 1.8 \times 10^{-3} \mathrm{~m} \)
(B) \( 3.3 \times 10^{-2} \mathrm{~m} \)
(C) \( 7.9 \times 10^{-6} \mathrm{~m} \)
(D) \( 4.2 \times 10^{-4} \mathrm{~m} \)
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