A. 6.0 x 10‾²J
B. 7.6 x 10‾²J
C. 1.8 x 10‾²J
D. 6.6 x 10‾²J
Correct Answer:
Option A = 6.0 x 10‾²J
Explanation
Work done on a stretched cord
= Average force x extension
= (10 + 0)/2 x 1.2 x 10‾²
= 6.0 x 10‾²J
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