Answer:
F = 10.2 N
Last option is correct.
Step-by-step explanation:
We can apply Hooke's law to find the force required to stretch the spring.
From Hooke's law, we have
F = k x
Here, F = force required to stretch the spring
k = spring constant
x = length that the spring has been stretched.
We have,
x = 1.2 m
k =8.5
Thus, the force is given by
F = 8.5 × 1.2
F = 10.2 N
Last option is correct.
