An unstretched spring has a length of 2.0 cm.
The spring is then stretched within its limit of proportionality by a tensile force of 1.5 N so that the elastic potential energy stored in the spring is 0.045 J.
What is the stretched length of the spring?
1 )
3.0 cm
2 )
5.0 cm
3 )
6.0 cm
8.0 cm
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