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15.1 Forces and springs

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Question 22

A spring in a toy launcher has an unstretched length of 14.0 cm. It is pulled first to a length of 16.0 cm and then to a length of 24.0 cm. The spring stays in its linear region throughout.

How many times larger are the force exerted on the spring and the elastic potential energy stored in it at a length of 24.0 cm than at a length of 16.0 cm?

[1]

Force: $1.5$ times as large; energy: $2.25$ times as large

Force: $5$ times as large; energy: $12.5$ times as large

Force: $5$ times as large; energy: $25$ times as large

Force: $4$ times as large; energy: $16$ times as large

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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