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Solved: A metal wire of diameter D stretches by 0.100 mm
Chapter 11, Problem 21DQ(choose chapter or problem)
QUESTION:
Problem 21DQ
A metal wire of diameter D stretches by 0.100 mm when supporting a weight W. If the same-length wire is used to support a weight three times as heavy, what would its diameter have to be (in terms of D) so it still stretches only 0.100 mm?
Questions & Answers
QUESTION:
Problem 21DQ
A metal wire of diameter D stretches by 0.100 mm when supporting a weight W. If the same-length wire is used to support a weight three times as heavy, what would its diameter have to be (in terms of D) so it still stretches only 0.100 mm?
ANSWER:Solution 21DQ
Step 1:
Initial diameter of the wire = D or 2R
Area of the wire A = or
Force applied by the weight F = W