Answer
The plot of $U(x)=-4e^{-\frac{x}{4}}~J$ for $0\leq x\leq10$ and the line of the mechanical energy $E=3.73~J$ is as shown.
Work Step by Step
The plot of $U(x)=-4e^{-\frac{x}{4}}~J$ for $0\leq x\leq10$ and the line of the mechanical energy $E=3.73~J$ is as shown.