Answer:
[tex]0.4452m[/tex]
Explanation:
Spring constant is given as:
[tex]k=F/x[/tex]
But F is mass times velocity(gravitational acceleration[tex]([/tex]=[tex]9.8m/s^2)[/tex]
83N/m=[tex]2.5kg([/tex][tex]9.8m/s^2)/x[/tex]
[tex]x=0.2952m[/tex]
Therefore the ruler reading will be [tex]x+0.15m[/tex]. Hence the ruler reading is 0.4451m