RP 6- stretching a spring

• what must top of spring be in line with

  0cm mark on ruler
• unstretched length

  no force attached
• calculate extension

  subtract unstretched length from reading
• extension is directly proportional to what

  weight
• example of linear relationship

  spring
• example of non linear relationship

  rubber band
• limit of proportionality

  no longer returning back to original shape when force is removed