Hooke's law states that the restoring force of a spring is directly proportional to a small displacement Students in physics class were conducting an experiment to determine the difference in displacement among various
springs. They wanted to determine if displacement not only varied with mass but also with the type of spring
used. The class tested twenty springs, they varied in length, circumference and material. They used an
assortment of masses as well
On some springs they used masses of Sg increments, on others, masses of 109 increments. After hanging the
masses from each spring, they measured how far the springs stretched. The students concluded that thin,
aluminum springs had greater displacement than short, thick, iron springs
How could the students improve the validity of the data in this experiment to better support their conclusion?
A
Use only springs made from two different materials
D)
Repeat the trials several times and take an average