Forces and elasticity

• What happens to an elastic object when forces are released?

  It returns to its original length
• What is the difference between elastic and inelastic deformation?

  Elastic deformation returns to original shape
• How do you calculate the force needed to stretch an elastic object?

  Force = spring constant × extension
• What is an example of an elastic material?

  Rubber bands
• What is the term for changes in shape or length due to applied forces?

  Deformation
• What is the result of applying one force to a stationary object?

  The object moves without changing shape
• What is an example of an inelastic material?

  Certain polymers
• What is the outcome when inelastic materials are stretched?

  They do not return to original length
• What is the equation to calculate the force required to extend a spring?

  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 Newtons
• What type of energy is stored when an elastic object is stretched or compressed?

  Elastic potential energy
• What is the relationship between work done and elastic potential energy?

  Work done equals elastic potential energy
• What should you do if an object is inelastically deformed?

  It does not return to original shape
• What are the key characteristics of elastic materials?

  • Return to original length after force removal
  • Can be stretched, compressed, or bent
  • Changes are called elastic deformation
• What are the steps to calculate the force required to stretch a spring?

  1. Identify the spring constant (N/m)
  2. Measure the extension (m)
  3. Use the formula: Force = spring constant × extension
• What happens to elastic potential energy when an elastic object is deformed?

  • Energy is stored in the object
  • Work done equals the elastic potential energy
• What is the difference between elastic and inelastic deformation?

  • Elastic deformation: returns to original shape
  • Inelastic deformation: does not return to original shape
• What is the significance of balanced forces in deformation?

  • Balanced forces allow for elastic deformation
  • Unbalanced forces cause movement without deformation