A human hair breaks under a tension force of 1.3 N. If the tensile strength of human hair is about 2.0x10^8 Pa, what is the diameter of the hair in microns (10^-6m)?
I have no clue how to solve this problem! Please Help!
Physics Diameter Question?
From geometry, D = 2閳?A/锜?
From mechanics, Stress = F/A, 閳?A = F/S. Ergo,
D = 2閳?F/S锜? = 9.1E-5 m, or .091 mm
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