(adsbygoogle = window.adsbygoogle || []).push({}); Potential Energy Questions, please help, another problem up...

A force parallel to the x-axis acts on a particle moving along the x-axis. This force produces a potential energy U(x) given by U(x)= (1.49J/m^4)x^4.

What is the force (magnitude and direction) when the particle is at position x=-0.835m?

I can't seem to get the right answer for this question. Plugging -0.835m in for x and then solving for F does not work. Maybe my logic is flawed. Please tell me how to reason this out. Thanks in advance.

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# Homework Help: Potential Energy Question

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