Elasticity

• What are the different types of elasticity discussed in the video?

  Elastic and inelastic deformation
• What does the term 'spring constant' refer to?

  It measures stiffness of a spring
• What is Hooke's Law?

  Force is proportional to extension
• What is the difference between elastic and inelastic deformation?

  Elastic returns to original shape; inelastic does not
• What is extension in the context of springs?

  Increasing length of a spring when stretched
• How does the weight of a mass affect a hanging spring?

  It increases the spring's length
• What does the natural length of a spring refer to?

  The length without any external forces applied
• What does the relationship between force and extension look like on a graph?

  It is a straight line passing through the origin
• What happens to the deformation when the elastic limit is reached?

  It may not return to original shape
• What is the formula that relates force and extension?

  f = ke
• What happens when you apply a force to an object?

  It can compress, stretch, or bend
• What are the key concepts related to force and extension in springs?

  • Force is proportional to extension (Hooke's Law)
  • Spring constant (k) measures stiffness
  • Elastic deformation returns to original shape
  • Inelastic deformation retains new shape
• Which object is easiest to observe elasticity with?

  A spring
• What is another term for inelastic deformation?

  Plastic deformation
• Why does the spring not fall when mass is added?

  It is balanced by an upward force
• What does a higher spring constant indicate?

  Stiffer material requiring more force
• What units are used for the spring constant?

  Newtons per meter
• What does it mean if an object is inelastically deformed?

  It retains a new shape after force removal
• What are the implications of reaching the elastic limit in a spring?

  • Deformation may become permanent
  • Hooke's Law no longer applies
  • Object may not return to original shape