Answer:
The answer to your problem is, the spring constant K should be 6 N/m.
Step-by-step explanation:
When the force F should be applied at the spring so it generated the stretching distance
i.e.
F = k.x
F means the force
K means the constant
x means the stretching distance
Here the weight should be 96 N, the stretching distance is 16 km
Now the spring constant should be:
K = f/x
= 96/16
= 6 N/m
Thus the answer to your problem is, the spring constant K should be 6 N/m.