Elasticity, Spring Constant & Hooke's Law

• 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 happens when a force is applied to an object?

  It can compress, stretch, or bend
• Why is it easier to see deformation in a spring than in other objects?

  Springs are more elastic than other objects
• What must be applied to keep an object stationary?

  More than one force must be applied
• What do we call the change in shape of an object?

  Deformation
• What are the two types of deformation?

  Elastic and inelastic deformation
• What is elastic deformation?

  Object returns to original shape after force removal
• What is inelastic deformation?

  Object does not return to original shape
• What is extension in the context of springs?

  Increasing length of a spring when stretched
• What happens to a spring's length when a mass is added?

  Its length increases due to the weight
• What does the spring's own mass exert on it?

  A downward force in the form of weight
• What is the natural length of a spring?

  Length before any forces are applied
• What does the support do when a mass is added to a spring?

  Exerts an equal but opposite force upwards
• How is the relationship between force and extension expressed mathematically?

  f is proportional to e
• What does the letter k represent in the equation f = ke?

  The spring constant
• What does a higher spring constant indicate?

  Material is stiffer and requires more force
• What does a graph of force against extension show?

  Force and extension are directly proportional
• What is the elastic limit?

  Point where Hooke's Law no longer applies
• What happens after the elastic limit is reached?

  Object may not return to original shape
• What are the key concepts related to elasticity and deformation?

  • Types of deformation: elastic and inelastic
  • Spring constant (k) measures stiffness
  • Hooke's Law: force is proportional to extension
  • Elastic limit: point where Hooke's Law fails
• How do you measure extension in a spring?

  1. Hang a spring from a solid support
  2. Add downward force (mass) to the spring
  3. Measure the change in length
• What factors affect the behavior of springs under force?

  • Spring constant (k)
  • Amount of force applied
  • Type of deformation (elastic vs inelastic)