Physics (AS & A Level) · Feb / March 2017 · Paper 12 · Question 21

A weight of 120 kN is placed on top of a metal column. The length of the column is compressed by 0.25 mm. The column obeys Hooke's law when compressed. How much energy is stored in the compressed column?

1. A15 J
2. B30 J
3. C15 kJ
4. D30 kJ

As printed in the paper