forces and elasticity

• What should you be able to state by the end of the video?

  The difference between elastic and inelastic deformation
• What is one of the calculations you should be able to perform by the end of the video?

  Calculate the force needed to stretch or compress an object
• What happens to an elastic object when the forces acting on it are removed?

  It returns to its original length or shape
• What are examples of elastic materials mentioned in the video?

  • Slinky
  • Rubber bands
  • Rubber gloves
  • Eraser
  • Clay ground surface
  • Tennis ball
• What is the definition of elastic deformation?

  Changes in length or shape that return to the original state when forces are removed
• What is the effect of applying only one force to a stationary object?

  The object would simply move rather than changing length or shape
• What is the difference between elastic and inelastic materials?

  Elastic materials return to their original length, while inelastic materials do not
• What is the equation to calculate the force needed to stretch an elastic object?

  Force (N) = Spring constant (N/m) × Extension (m)
• If the spring constant is 200 N/m and the extension is 0.04 m, what is the force required?

  8 N
• What is stored in an elastic object when it is stretched or compressed?

  Elastic potential energy
• When is the work done equal to the elastic potential energy?

  When the object is not inelastically deformed
• What is the next topic to be covered in the following video?

  • Required practical on stretching a spring
  • Questions on forces and elasticity
• Where can students find additional questions on forces and elasticity?

  In the vision workbook linked in the video