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Question
A block is attached to the end of an ideal spring and moved from coordinate xito coordinate xf. The relaxed position is at x= 0. The work done by spring is positive if:
A) xi= 2 cm and xf= 4 cm
B) xi= -2 cm and xf= 4 cm
C) xi= -2 cm and xf= -4 cm
D) xi= 2 cm and xf= -4 cm
E) xi= -4 cm and xf= -2 cm
Answer
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Related questions
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