[題目] 考古題
[領域] 位能 (題目相關領域)
[來源] 考古題
[題目]U(x)=kx^2/2+A*exp(-ax^2) where k,A,a are constant
Suppose a particle of mass m moving with this potential
energy has a velocity v when its position is x=a, Show
that the particle doesn't pass through the origin unless
A≦mv^2+ka^2/2{1-exp(-ax^2)}
[瓶頸] 我把F=-▽U(x)算出來
大概描一下圖形就不知道該怎麼做下去了 謝謝~
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