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1.5 Forces

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Question 173

A metal spring is suspended vertically from a support and weights are added to its lower end. The extension of the spring increases until the limit of proportionality is reached.

If an additional small weight is then added, which of the following statements correctly describes the outcome?

A

The extension of the spring increases and the spring no longer obeys Hooke’s law.

B

The extension of the spring decreases and the spring no longer obeys Hooke’s law.

C

The extension of the spring increases and the spring continues to obey Hooke’s law.

D

The extension of the spring remains the same and the spring continues to obey Hooke’s law.

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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