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Learning objective

Recognize that an object is in equilibrium when there is no net force and no net moment acting on it.

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  • Read the explanation.
  • Check key terms.
  • Practise with linked questions.
Cambridge IGCSE PhysicsMotion, forces and energyCore content

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Quick explanation

Recognize that an object is in equilibrium when there is no net force and no net moment acting on it

  • This point belongs to Turning effect of forces, especially Turning effect of forces outcomes.
  • You need to be able to recognize that an object is in equilibrium when there is no net force and no net moment acting on it.
  • The key ideas to know are State, Understand, and Describe.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

StateUnderstandDescribe

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This objective helps connect Turning effect of forces outcomes to exam-style questions, flashcards, and revision notes for Turning effect of forces.

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Paper 3 structured question: Turning effect of forces

Paper 3Theory (Core)1 marks

Description

Equilibrium of a Beam

The beam has a weight of 200 N acting downwards at its center. Two supports apply upward forces of 100 N each at the ends of the beam.

  1. a

    State the condition for the beam to be in equilibrium.

    Aim for approximately 1 distinct marking point.

    [1]
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