Question

A vertical spring has a force constant of 125N/m. By how much will the spring be compressed if a mass of 0.525kg is placed on top of it?

Answer 1

Given:

$k=125\:\rm N/m$

$m=0.525\:\rm kg$

The force equilibrium condition

$$kx=mg$$

$$x=mg/k=0.525*9.8/125=0.041\:\rm m$$