The relationship between force and spring extension

• Explain the method for finding the extension of the spring?

  1. Set up the spring on a clamp stand and then place 1 N on the spring 2. Measure the extension of the spring and record the result. 3. Repeat for a range of masses from 1 to 10 N

  
• What are the hazards of this experiment?

  The masses falling onto the experimenters feet.