I really need help with this homework question. I thought the function very stranger to be a function of a potential energy. It´s seems to be like Lennard Jonnes pontential energy function. Am I right?

A single conservative force $F ( x )$ acts on a particle of mass . The potential energy force is associated with $$U ( x ) = - ( x + 1 )e^{-2x}$$

(a) Determine the force acting on the particle

(b) What is the lowest energy value potential?

(c) Outline graph of potential energy function of the position


1 Answer 1


This is a very basic problem: (a) $F=-\frac{d U(x)}{dx}$. (b) You need to find the minimum of $U(x)$; (c) Sketch a graph. For all the questions you can use wolframalpha. If I understood your problem correctly then (a) and (b,c) .

  • 1
    $\begingroup$ +1 the scientist of the future: just ask the right question to wolfram alpha $\endgroup$
    – user83548
    Nov 6, 2015 at 3:25

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