Answer :
From a spring's equilibrium point, a mass is stretched by 4 cm. The restoring force will also double if the displacement doubles. Option B is correct.
What is spring force?
The force required to extend or compress a spring by some distance scales linearly with respect to that distance is known as the spring force. Its formula is;
F = kx
The given data in the problem is;
F is the spring force =?
K is the spring constant= 8.5 N/m
x is the length by which spring got stretched = 1.2m
Given condition:
Displacement is doubled(x'=2x)
The spring force is directly propotional to the displacement of the spring;
F ∝ x
F' ∝ x'
If the displacement is doubled, the spring force will also double.
Hence option B is correct.
To learn more about the spring force refer to the link;
https://brainly.com/question/4291098
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