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15.1 Forces and springs

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Question 35
F

A spring obeys Hooke's law. Its extension increases from 2.0 cm to 6.0 cm. Use F=kxF=kxF=kx and E=12kx2\displaystyle E=\frac{1}{2}kx^2E=21​kx2. Which gives the changes in force and stored elastic energy?

[1]
A

Force becomes 333 times as large; energy becomes 999 times as large.

B

Force becomes 999 times as large; energy becomes 333 times as large.

C

Force becomes 999 times as large; energy becomes 999 times as large.

D

Force becomes 333 times as large; energy becomes 333 times as large.

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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