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15.1 Forces and springs

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Question 9

Two spring-loaded lids use springs P and Q. The springs store the same elastic energy and both obey Hooke's law. The force exerted on spring P is three times the force exerted on spring Q. Spring Q has spring constant $k\,$ and extension $x$ .

Which gives the spring constant and extension of spring P compared with spring Q?

[1]

$9 k$ and $x /3$ .

$3 k$ and $x /3$ .

$9 k$ and $3 x$ .

$3 k$ and $3 x$ .

Markscheme

15.1 Forces and springs Questions

GCSE
Physics
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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