A. 0.04m
B. 0.12m
C. 0.01m
D. 0.08m
Correct Answer:
Option D – 0.08m
Explanation
From Hoke’s Law, F = ke, K = Constant of Force
For the first case, Force = mg,
= 0.8 × 10 = 8N
∴ 8 = k × 0.04
k = 8/0.04
= 200Nm−¹
Since K is constant
For the second case, F = ke
F = 200 × e
∴ e = F/200
= 16/200
= 0.08m
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