A 4.0-m-long steel wire has a cross-sectional area of

University Physics | 13th Edition | ISBN: 9780321675460 | Authors: Hugh D. Young, Roger A. Freedman

ISBN: 9780321675460 31

Solution for problem 40E Chapter 11

University Physics | 13th Edition

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Problem 40E

A 4.0-m-long steel wire has a cross-sectional area of 0.050 cm2 .Its proportional limit has a value of 0.0016 times its Young’s modulus (see Table 11.1). Its breaking stress has a value of 0.0065 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?

Step-by-Step Solution:

Solution 40E Step 1 of 3: a) w = 1.6 × 10 3 × 20 × 10 Pa × 5 × 10 m 6 2 3 = 1.6 × 10 N

Step 2 of 3