Forces and Elasticity

• What is the difference between elastic and inelastic deformation?

  Elastic deformation returns to original shape
• What can you calculate regarding an object in this lesson?

  Force needed to stretch or compress
• What energy transfers occur when an elastic object is deformed?

  Elastic potential energy is stored
• What happens to an elastic material when forces are applied?

  It stretches, compresses, or bends
• What do elastic materials do when forces are removed?

  Return to original length or shape
• What is the term for changes in an object's length or shape due to applied forces?

  Elastic deformation
• What happens when only one force is applied to a stationary object?

  The object moves instead of changing shape
• What happens to inelastic materials when stretched?

  They do not return to original length
• How do you calculate the force needed to stretch an elastic object?

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

  8 N
• What does 'e' represent when calculating compression of an elastic object?

  Compression, not extension
• What is the relationship between work done and elastic potential energy?

  Work done equals elastic potential energy
• What should you do to prepare for the next video on stretching a spring?

  • Review the concepts of forces and elasticity
  • Watch the previous video on elastic potential energy
  • Practice questions from the vision workbook
• Where can you find questions on forces and elasticity?

  In the vision workbook