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Winding up a toy or an old-fashioned watch stores energy by doing work against its:
AMagnet
BGearbox
CSpring
DBattery
Answer & Solution
Correct answer: C. Spring
1. Elastic potential energy has an everyday illustration.
2. Elastic potential energy is one of the named forms of potential energy.
3. When you wind up a toy, an egg timer, or an old-fashioned watch, you do work.
4. You do work against its spring and store energy in it.
_Source: OpenStax College Physics for AP Courses 2e (CC BY 4.0), Ch 7 'Work, Energy, and Energy Resources', sections 7.1-7.9_
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