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Question: 
  1. What is the minimum cross-sectional area required of a vertical steel cable from which is suspended a 270-kg chandelier? Assume a safety factor of 7.0.
  2. If the cable is 7.5 m long, how much does it elongate?

Source: Giancoli, Douglas C., Physics: Principles with Applications, 7th Edition, 2014.

Quick Answer: 
  1. $3.7 \times 10^{-5} \textrm{ m}$
  2. $2.7 \textrm{ mm}$

Giancoli 7th Edition, Chapter 9, Problem 53

(1:26)

Chapter 9, Problem 53 is solved.

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