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A copper wire of diameter 2 mm is 10 m long and stretched
Chapter 3, Problem 201HP(choose chapter or problem)
Problem 201HP
A copper wire of diameter 2 mm is 10 m long and stretched out between two posts. The normal stress (pressure), σ =E(L – L0)/L0, depends on the length, L, versus the un stretched length, L0, and Young’s modulus, E = 1.1 × 106 kPa. The force is F = Aσ and is measured to be 110 N. How much longer is the wire, and how much work was put in?
Questions & Answers
QUESTION:
Problem 201HP
A copper wire of diameter 2 mm is 10 m long and stretched out between two posts. The normal stress (pressure), σ =E(L – L0)/L0, depends on the length, L, versus the un stretched length, L0, and Young’s modulus, E = 1.1 × 106 kPa. The force is F = Aσ and is measured to be 110 N. How much longer is the wire, and how much work was put in?
ANSWER:
Solution 201Hp
Step 1 of 4
Here we to calculate the extension and work done on the copper wire when it is stretched.
Given,
Diameter,
Original Length,
Young’s modulus,
Force,
Given force relation,
Stress,
To find,
Extension,
Work done,