Physics 0625 · IGCSE · Forces

Forces — practice question

A weight is suspended from a steel wire. The weight is then increased. The wire becomes longer until the limit of proportionality is reached. The weight is increased slightly again. What occurs?

  • AThe extension of the wire increases and the wire no longer obeys Hooke’s law.
  • BThe extension of the wire decreases and the wire no longer obeys Hooke’s law.
  • CThe extension of the wire increases and it obeys Hooke’s law.
  • DThe extension of the wire decreases and it obeys Hooke’s law.

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