Required Practical 6:Stretching a Spring

• What is the main objective of the investigation described in the video?

  To investigate the relationship between force and extension for a spring.
• What equipment is needed to investigate the relationship between force and extension for a spring?

  • Clamp stand
  • Two bosses
  • Two clamps
  • Meter rule
  • Spring
  • Heavy weight
  • Wooden splint
• Why is it important for the meter rule to be vertical during the experiment?

  To ensure accurate readings of the spring's extension.
• What is the unstretched length of the spring?

  The length of the spring with no force attached.
• How do you calculate the extension produced by adding a weight to the spring?

  By subtracting the unstretched length from the new position of the pointer.
• What is the extension produced by a 1 Newton weight?

  4 cm
• What is the extension produced by a 2 Newton weight?

  8 cm
• What is the extension produced by a 3 Newton weight?

  12 cm
• What is the extension produced by a 4 Newton weight?

  16 cm
• What does the graph of extension against weight indicate about the relationship between force and extension for a spring?

  It shows a linear relationship, meaning extension is directly proportional to weight.
• What is the difference between elastic and inelastic deformation in springs?

  • Elastic deformation: Extension returns to zero when weight is removed.
  • Inelastic deformation: Extension remains even after weight is removed.
• What happens if too much weight is added to the spring?

  The graph becomes nonlinear, indicating inelastic deformation.
• What is the limit of proportionality in the context of springs?

  The maximum weight that can be added without causing permanent deformation.
• How is the spring constant calculated from the graph?

  • By dividing the force by the extension.
  • The spring constant remains the same as long as the limit of proportionality is not exceeded.
• What equation is used to calculate the force required to extend a spring?

  The equation is force equals spring constant multiplied by extension.