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# Mechanics elasticity (M2) watch

1. Can anyone help find where I've gone wrong (Q3)?
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2. (Original post by pippabethan)
Can anyone help find where I've gone wrong (Q3)?
It's a string, not a spring - it won't have any EPE at A, for obvious reasons. Whilst a spring is compressed and stores EPE when compressed beyond its natural length, a string simply becomes limp once its length is smaller than the natural length, can you imagine this?

Hence, for A: only.
3. (Original post by Zacken)
It's a string, not a spring - it won't have any EPE at A, for obvious reasons. Whilst a spring is compressed and stores EPE when compressed beyond its natural length, a string simply becomes limp once its length is smaller than the natural length, can you imagine this?

Hence, for A: only.
Thank you! Makes sense now
4. (Original post by pippabethan)
Thank you! Makes sense now
Other than that, good work.

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