Hooke’s law

• What are the different types of elasticity

  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
• What do we call the change in shape of an object?

  Deformation
• Why is it harder to notice changes in shape for some objects?

  They are less elastic than springs
• 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
• How can we measure the extension of a spring?

  By adding downward force and measuring length change
• What force acts on a spring due to its own mass?

  Weight exerting a downward force
• What happens when we add mass to a spring?

  It increases the spring's length and extension
• What does the solid support do when a mass is added to a spring?

  Exerts an equal but opposite force upwards
• What is the relationship between force and extension in springs?

  Extension increases proportionally with force
• How is the relationship between force and extension expressed mathematically?

  f is proportional to e
• What does the spring constant (k) indicate?

  How many newtons to stretch by one meter
• What happens to the spring constant as stiffness increases?

  It requires more force to stretch
• What does a graph of force against extension show?

  Force and extension are directly proportional
• What indicates that Hooke's Law is being followed in a graph?

  A straight line passing through the origin
• What is the elastic limit?

  The 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 deformed shape
  • Spring constant (k): stiffness measure
  • Hooke's Law: force proportional to extension
  • Elastic limit: point where Hooke's Law fails