Springs

• Any object that deforms Elastically (returns to its original shape) obeys Hooke's Law
• What is Hooke's Law

  Force and extension are directly proportional
• What are the steps for the practical

  • Add masses onto springs to change force
  • Measure extension with ruler at each weight
  • Gradient of graph = Spring constant
  • Avoid systematic error by lining up 0cm with the bottom of the spring
  • Avoid parallax error by getting on eye level when measuring
• Straight line through origin = Directly Proportional relationship