Question

If the length of a `31 cm` spring increases to `53 cm` when a `4 kg` weight is hanging from it, what is the spring's constant?

Answer 1

`"178 N/m"`

Explanation:

`F = kDeltax`

`k = F/(Deltax) = (mg)/(Deltax) = ("4 kg × 9.8 m/s"^2)/("0.53 m - 0.31 m") = "178 N/m"`