Elasticity, hooked law and spring constant

• 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 are some objects less elastic than springs?

  They show less noticeable shape change
• 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
• 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 weight
• What force acts on a spring when it is hanging?

  The spring's own weight exerts a downward force
• What does the solid 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?

  As $f \propto e$
• What does the spring constant 'k' represent?

  Stiffness of the spring in N/m
• 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?

  The object may undergo inelastic deformation
• What are the key concepts related to elasticity and deformation?

  • Elastic deformation: returns to original shape
  • Inelastic deformation: retains new shape
  • Spring constant (k): stiffness measure
  • Hooke's Law: force proportional to extension
  • Elastic limit: point of permanent deformation