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15.1 Forces and springs

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Question 27
F

A spring has an unstretched length of 10.0 cm and a spring constant of 120 N/m. It is stretched to a length of 15.0 cm within its linear range. Use E=12kx2\displaystyle E=\frac{1}{2}kx^2E=21​kx2. What is the work done?

[1]
A

0.30 J0.30\ \mathrm{J}0.30 J

B

3.00 J3.00\ \mathrm{J}3.00 J

C

0.15 J0.15\ \mathrm{J}0.15 J

D

1.35 J1.35\ \mathrm{J}1.35 J

Markscheme

15.1 Forces and springs Questions

  1. GCSE
  2. /Physics
  3. /15.1 Forces and springs

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.

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