Forces friction

• Types of Force


  • Electrostatic
  • Thrust
  • Air resistance (Friction)
  • Tension
• Drawing forces acting on a body

  1. Identify all forces acting

  2. Determine net force

  3. Determine acceleration
• Friction is always there to slow things down
• Friction


  • Occurs between solid surfaces which are gripping
  • Occurs between solid surfaces which are sliding past each other
  • Causes resistance "drag" from fluids (liquids or gases, eg air)
• As speed increases


  Friction force increases
• Forces are quietly rocking the world go round
• Forces acting on a book at rest on a table

  • Draw diagram showing all forces
• The force that opposes motion is called the resistance or drag.
• Resistance depends on the shape, size, speed, density, and viscosity of the fluid through which an object moves.