GCSE Combined Science (AQA)

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Contact Forces

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Forces Forces and their interactions

Contact Forces

2:28 Introduction to Vectors and Forces
Spec 4.5.1.2
Previous Representing Vectors as Arrows Next Simple Resultant Force Calculations
  • A contact force is a force between two objects that are physically touching.
  • Pushing a box with your hand is an example of a contact force.
  • A normal contact force stops an object from falling through a surface, such as a pot resting on a table.
  • The direction of the normal contact force is perpendicular to the surface.
  • Contact forces allow us to push objects we are touching, preventing the hand from going through the box.
  • Resistance forces, like friction, are contact forces that slow an object down when moving.
  • Friction occurs when surfaces rub against each other due to unevenness.
  • Drag is a resistance force experienced when an object moves through a fluid, such as air.
  • Tension is a force through an object when it is pulled from both ends, like in a rope.
  • Tension is consistent throughout a taught rope.
  • Understanding and identifying these contact forces is important for exams.

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