Equilibrium and elasticity

timer Asked: Nov 18th, 2015

Question description

A 4.5 m long steel wire has a cross-section area of 0.055 cm2. Its proportional limit has a value of 0.0014 times its Young's modulus (see a table) . Its breaking stress has a value of 0.0059 times its Young's modulus. The wire is fastened at its upper end and hangs vertically.

(a) How great a weight can be hung from the wire without exceeding the proportional limit?

(b) How much will the wire stretch under this load?

(c) What is the maximum weight that the wire can support?

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