Weight on spring = 15 Newtons
stretch = 2.8 cm
Weight on spring = 5 Newtons
stretch 6.0 cm
Values for each weight is less
than data table.
Weight on spring = 60 Newtons

:: A thicker spring is used. :: Stretch of spring is 1.2 cm.
:: The weight on the spring is 100 Newtons.
:: The weight on the spring is 35 Newtons. :: Stretch of spring is 0.4 cm.
:: Stretch of spring is 4.8 cm.