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If a load of mass 10N stretched a cord by 1.2cm, what is the total...

Physics
JAMB 2009

If a load of mass 10N stretched a cord by 1.2cm, what is the total work done?

  • A. 6.0 x 10-2J
  • B. 7.6 x 10-2J
  • C. 1.8 x 10-2J
  • D. 6.6 x 10-2J
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Correct Answer: Option A
Explanation

Work done on a stretched cord
= Average force x extension
= \(\frac{1 \times 10 \times 0.012}{2}\)
= 6.0 x 10\(^{-2}\)J

There is an explanation video available below.


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Explanation Video

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WAEC GCE Nov/Dec 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 332996
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