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15.1 Forces and springs

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Question 19
F

A student hangs different weights on a spring and measures the extension each time.

The Figure shows a graph of her results.

Figure

image

a.

Use the Figure to give the extension of the spring when the force is 3.0 N.

[1]
b.

Calculate the spring constant of the spring.

Use the straight part of the graph.

[3]
c.

Describe the relationship between force and extension shown in the Figure.

[3]
d.

A student says:

'When the force is 8.0 N, the extension will be 16 cm, because doubling the force always doubles the extension.'

Explain why the student is wrong. Use the Figure in your answer.

[2]
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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