The Student Room Group

m3 hooke's law energy

Could someone please explain to me why 2(lambda) is used in the formula for elastic potential energy??
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Reply 1
I hope you notice they've used one string in the question. What the solution bank is doing is essentially splitting the string into two and considering both their individual EPEs.
Reply 2
Original post by aymanzayedmannan
I hope you notice they've used one string in the question. What the solution bank is doing is essentially splitting the string into two and considering both their individual EPEs.


OHHHHHHHHHH I see thank you!

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