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PHYSICS

JAMB 2009 - Question 16

Physics 2009 JAMB Past Questions - Question 16: If a load of mass 10N stretches a cord by 1.2cm, what is the total work done?

Choose the correct answers from the options given.

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

A: 6.0 x 10²J

B: 7.6 x 10²J

C: 1.8 x 10²J

D: 6.6 x 10²J

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Correct Answer

Explanation

Work done on a stretched cord
= Average force x extension
= 1×10×0.0122

= 6.0 x 10^−2J