Physics: Young's Modulus Example II

Physics
Tutor: None Selected Time limit: 1 Day

For safety in climbing, a mountaineer uses a nylon rope that is 65 m long and 1.4 cm in diameter. When supporting a(n) 81-kg climber, the rope elongates 1.8 m. Find its Young's modulus. 

Jul 8th, 2015

Thank you for the opportunity to help you with your question! the solution is as such:

E = [F/ Ao] / [L/ Lo]

where

E is the youngs  modulus

F is the force applied = mg

Ao is the orignal cross section area = pi* r^2

L is the change in length

Lo is the original length

so, E = 1.48 * 10 ^ 8


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Jul 8th, 2015

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