(a) Sketch a graph of the potential energy function U(x) = kx2 /2 + Ae−αx2 , where k, A, and α are constants. (b) What is the force corresponding to this potential energy? (c) Suppose a particle of mass m moving with this potential energy has a velocity va when its position is x = a . Show that the particle does not pass through the origin unless A ≤ mva^ 2 + ka^2 / 2 ( 1 − e^ −αa^2)
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