The Lagrangian,
\(L=T-V\)
a particle enters a field with certain kinetic energy. It acquires potential energy at the expense of its \(KE\). What happens to the \(L\)eftover energy?
Equally admissible,
\(L=V-T\)
a particle of certain potential energy in a field is set off acquiring kinetic energy. It acquires \(KE\) at the expense of \(PE\). What happens to the \(L\)eftover energy?
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