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The extension in a spring when 5g wt was hung from it was 0.56cm. If...

Physics
JAMB 1981
The extension in a spring when 5g wt was hung from it was 0.56cm. If Hooke's law is obeyed, What is the extension caused by a load of 20g wt?
  • A. 1.12m
  • B. 2.14cm
  • C. 2.52cm
  • D. 2.80cm
  • E. 2.24cm
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Correct Answer: Option E
Explanation
Extension & Load

Extension = K constant

\(\frac{\text{load}}{0.56cm}\) = \(\frac{X}{20g}\)

X = 2.24cm
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