Physics (AS & A Level) · May / June 2023 · Paper 13 · Question 18

A metal wire has length 5.2 m and diameter 1.0 mm. The metal has Young modulus 360 GPa. The wire is fixed at one end and a force is applied to the other end. The force extends the wire by 7.2 mm. The wire obeys Hooke's law. What is the force applied to the wire?

1. A1.2 × 10² N
2. B3.9 × 10² N
3. C5.0 × 10² N
4. D1.6 × 10³ N

As printed in the paper