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 elastic deformation?

  Change in shape that returns to original
• What occurs when inelastic materials are stretched?

  They do not return to original length
• 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 is elastic potential energy?

  Energy stored when an elastic object is deformed
• What is the relationship between work done and elastic potential energy?

  Work done equals elastic potential energy
• What are the characteristics of elastic materials?

  • Return to original shape after deformation
  • Can be stretched, compressed, or bent
  • Require balanced forces for deformation
• What are the characteristics of inelastic materials?

  • Do not return to original shape after deformation
  • Permanent change in shape
  • Examples include certain polymers
• What is the process to calculate the compression of an elastic object?

  1. Identify the spring constant
  2. Measure the compression
  3. Use the formula: Force = spring constant × compression
• What should you do before attempting a calculation in the exam?

  • Understand the formula
  • Identify known values
  • Ensure units are consistent