Forces and Elasticity

• What is the relationship between force applied and extension of an elastic object?

  The extension is directly proportional to the force applied
• What happens if the limit of proportionality is exceeded?

  The relationship no longer holds true
• What is meant by inelastic deformation?

  A permanent deformation of the object
• What occurs when the force is removed from an inelastic object?

  The object does not return to its original shape
• What is the equation relating force, spring constant, and extension?

  Force = Spring Constant x Extension
• What are the units for force in the equation?

  Newtons (N)
• What are the units for spring constant in the equation?

  Newtons per meter (N/m)
• What are the units for extension in the equation?

  Meters (m)
• What type of energy is stored in a stretched spring?

  Elastic potential energy
• What can extension be replaced with in the equation for spring force?

  Compression
• What are the key concepts related to elastic and inelastic deformation?

  • Elastic deformation: returns to original shape
  • Inelastic deformation: permanently stretched
  • Extension is proportional to applied force
  • Elastic potential energy stored in stretched springs