A spring in a foot-operated workshop pedal obeys Hooke's law. The work done in increasing its extension from 2.0 mm to 6.0 mm is 0.16 J.
How much work is done in stretching the spring from zero extension to 2.0 mm?
0.080 J0.080\ \mathrm{J}0.080 J
0.040 J0.040\ \mathrm{J}0.040 J
0.018 J0.018\ \mathrm{J}0.018 J
0.020 J0.020\ \mathrm{J}0.020 J
102 exam-style questions on Edexcel GCSE Physics 15.1 Forces and springs, covering 15.1.1 Elastic and inelastic distortion, 15.1.2 The spring constant, 15.1.3 Work done in stretching a spring, and 15.1.4 Linear and non-linear force–extension. Each one has a worked solution and a mark scheme showing where the marks go.