Force and Extension

• Method for Force and Extension?

  1. Set up a newton-meter on a clamp stand and attach a ruler with weights on it
  2. Record the length of the unextended spring to act as the force
  3. Move the weight along the the meter ruler
  4. Record the length (metres) and weight (Newtons)
  5. Add another mass and record the new length
  6. Subtract the original length of the spring from the new lengths to calculate the extension
  7. Plot a graph of extension vs force, with the gradient being spring constant (calculate y/x)
• Diagram of Force and Extension?

  
• Safety Precautions of Force and Extension?

  • Ensure the stand holding the spring and weights is secure, either by clamping the base of the stand to the desk or by putting additional weight on the base of the stand.

  • Don't stand directly beneath the weights, in case they fall off.

  • Take care when adding the maximum weight to the spring. If too weak, the spring may snap. If the weight exceeds the elastic limit, the spring may extend suddenly.

  • Wear safety glasses in case the spring snaps.

  • Place weights on gently and avoid oscillating the spring.