Work Done

• When a force causes an object to move through a distance work is done on the object
• A force does work on an object when the force causes a displacement of the object
• $W =$$Fs$

  • Work done (W) in joules (J)
  • Force (F) in newtons (N)
  • Distance (s) in metres (m)
• One joule of work is done when a force of one newton causes a displacement of one metre
• 1 joule = 1 newton-metre
• Work done against the frictional forces acting on an object causes a rise in the temperature of the object