A-LevelPhysicsDeformation of solids9702/12 · Oct/Nov 2009 · Q211 Mark
A steel string on an electric guitar has the following properties. diameter = 5.0 × 10⁻⁴ m, Young modulus = 2.0 × 10¹¹ Pa, tension = 20 N. The string snaps, and contracts elastically. By what percentage does a length l of a piece of the string contract?
A5.1 × 10⁻⁴ %
B5.1 × 10⁻² %
C1.3 × 10⁻⁴ %
D1.3 × 10⁻² %
✓ Correct answer
B: 5.1 × 10⁻² %
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