forces and elasticity

• What is the difference between elastic and inelastic deformation?

  Elastic deformation returns to original shape
• How do you calculate the force needed to stretch an object?

  Force = spring constant × extension
• What happens to an elastic object when forces are removed?

  It returns to its original length
• What is the definition of elastic deformation?

  Change that returns to original shape
• What is the formula for calculating force in Newtons?

  Force = spring constant × extension
• If a spring constant is 200 N/m and extension is 0.04 m, what is the force required?

  8 Newtons
• What does 'e' represent in the force calculation for compression?

  Compression
• What energy is stored when an elastic object is stretched or compressed?

  Elastic potential energy
• What is the relationship between work done and elastic potential energy?

  Work done equals elastic potential energy
• What should you do if an object undergoes inelastic deformation?

  It does not return to original length
• What are the key characteristics of elastic materials?

  • Return to original shape after force removal
  • Can be stretched, compressed, or bent
  • Changes are reversible (elastic deformation)
• What are the key characteristics of inelastic materials?

  • Do not return to original shape after force removal
  • Changes are permanent (inelastic deformation)
  • Examples include certain polymers
• What is the process for calculating the force required to stretch or compress an elastic object?

  1. Identify the spring constant (N/m)
  2. Measure the extension or compression (m)
  3. Use the formula: Force = spring constant × extension
• What is the significance of elastic potential energy in stretching or compressing objects?

  • Energy stored when an elastic object is deformed
  • Work done on the object is converted to elastic potential energy
  • Important for understanding energy transfers in elastic materials
• What should students remember about the exam regarding the force calculation equation?

  • The equation is not provided in the exam
  • Students must memorize: Force = spring constant × extension