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F = ma (Final Problems)
Simple Harmonic Motion
FMA-2018A-20 · 2018A F = ma (AAPT)

2018 F = ma Exam A — Question 20

A spring stretched to double its unstretched length has a potential energy U . If the spring is cut in half, 0 and each half spring is stretched to double its unstretched length, then the total potential energy stored in the two half springs will be
Source: Question 20, 2018 F = ma Exam A, © 2018 American Association of Physics Teachers (AAPT) and the U.S. Physics Team. Adapted by PhysicsTrainer: reformatted into a separate question and answer choices for online multiple-choice practice; any shared setup from nearby questions is repeated here. Not affiliated with or endorsed by AAPT or the U.S. Physics Team.