Question

If the length of a `37 cm` spring increases to `73 cm` when a `4 kg` weight is hanging from it, what is the spring's constant?

Answer 1

The spring constant is `=108.9nm^-1`

Explanation:

The mass is `=4kg`

The extension is `Deltax=0.73-0.37=0.36m`

The spring constant is

`k=F/(Deltax)=4g/0.36=108.9Nm^-1`