Question

A spring has constant of 875N/m. What hanging mass will cause this spring to stretch 4.5m ?

Answer 1

Gives

$k=875N/m$

x=4.5m

We know that

$Kx=mg$

$m=\frac{Kx}{g}$

$m=\frac{875\times4.5}{9.8}=401.78kg$