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A load of 5N gives an extension of 0.56cm in a wire which obeys Hooke's...

Physics
JAMB 1987
A load of 5N gives an extension of 0.56cm in a wire which obeys Hooke's law. What is the extension caused by a load of 20N?
  • A. 1.12cm
  • B. 2.14cm
  • C. 2.24cm
  • D. 2.52cm
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Correct Answer: Option C
Explanation
\(\frac{F_1}{e_1}\) = \(\frac{F_2}{e_2}\)

\(\frac{5}{0.56}\) = \(\frac{20}{e_2}\)

e2 = 2.24cm
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