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1.5 Forces

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Question 44

A spring has an unstretched length of 5.0 cm. When a force of 80 N is applied to the spring, its length increases to 9.0 cm. The limit of proportionality is not exceeded. What is the spring constant of the spring?

A

8.9 N/cm8.9\text{ N/cm}8.9 N/cm

B

16 N/cm16\text{ N/cm}16 N/cm

C

20 N/cm20\text{ N/cm}20 N/cm

D

40 N/cm40\text{ N/cm}40 N/cm

Markscheme

1.5 Forces Questions

  1. IGCSE
  2. /Physics
  3. /1.5 Forces

245 exam-style questions on CIE IGCSE Physics 1.5 Forces, covering 1.5.1a Forces, resultant force and motion, 1.5.1b Load–extension graphs and the spring constant, 1.5.1c Friction and drag, 1.5.1d Force, mass and acceleration, 1.5.1e Motion in a circular path, 1.5.2a Moment of a force, 1.5.2b Principle of moments and equilibrium, and 1.5.3 Centre of gravity and stability. Each one has a worked solution and a mark scheme showing where the marks go.

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