9. Work & Energy
Work By Springs
7:03 minutes
Problem 7.77
Textbook Question
Textbook QuestionThe force required to compress an “imperfect” horizontal spring (doesn’t follow Hooke’s law) an amount x is given by F = 150x + 12x³ , where x is in meters and F in newtons. If the spring is compressed 2.0 m, what speed will it give to a 3.0-kg ball held against it and then released?
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