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A spring with an un-stretched length of 5 in expands from a length of 2 in to a length of 4 in. The work done on the spring is . . in .lb. (A) - k (2 in)? (B) k [(4 in)? - (2 in)²] (C) -k [(4 in)? - (2 in)²] 1 (2 in2 (1 in 21

A spring with an un-stretched length of 5 in expands from a length of 2 in to a length of 4 in. The work done on the spring is . . in .lb. (A) - k (2 in)? (B) k [(4 in)? - (2 in)²] (C) -k [(4 in)? - (2 in)²] 1 (2 in2 (1 in 21

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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A spring with an un-stretched length of 5 in expands from a length of 2 in to a length of 4 in. The work done on the spring is . in .lb. (A) k (2 in)2 (B) k [(4 in)? - (2 in)2] (C) - k [(4 in)? - (2 in)?] (D) k [(3 in)? - (1 in)*]
Transcribed Image Text:A spring with an un-stretched length of 5 in expands from a length of 2 in to a length of 4 in. The work done on the spring is . in .lb. (A) k (2 in)2 (B) k [(4 in)? - (2 in)2] (C) - k [(4 in)? - (2 in)?] (D) k [(3 in)? - (1 in)*]
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