Answer:
Oz=0.335 m
Step-by-step explanation:
Given parameters; 
Spring constant = 152 N/m
Force applied = 50.92N 
Unknown: 
How far did the spring stretch = ? 
Solution: 
For springs; 
 F = ke 
F is the force 
K is the spring constant 
e is the extension 
 Now insert the parameters and find e; 
 50.92 = 152 x e 
 e = 0.335m