A particle has potential energy U(x) = 3x² + 2x joules, with x in metres. What is the size of the force on it, in newtons, at x = 2 m?

PhysicsMediumHigh School (11–12)Mechanics › Work, Energy and Power

A particle has potential energy $U(x) = 3x^2 + 2x$ joules, with $x$ in metres. What is the size of the force on it, in newtons, at $x = 2\ \text{m}$ ?

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