Calculate the force (in N) a piano tuner applies to stretch a steel piano wire 8.60...
Calculate the force (in N) a piano tuner applies to stretch a steel piano wire 8.60 mm, if the wire is originally 0.850 mm in diameter and 1.35 m long.
Homework Answers
We know that Youngs modulus = stress /strain
2*10^11 = [F/(pi*r^2)]/(x/L)
2*10^11 = [F/(pi*0.85e-3^2/4)]/(8.6e-3/1.35)
F = 723 N answer
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