a single conservative force f(x) acts on a 1.0 kg particles that move along the x axis. the potential energy u(x) associated with f(x) is given by u(x)=-4xe^(-x/4) J, where x is in meters. at x=5.0 m, the particles has a kinetic energy of 2.0J. a) what is the mechanical energy of the system? determine the equation for fx as a function of xfor what x(finite)value of x does fx=0(adsbygoogle = window.adsbygoogle || []).push({});

Emech=K+U

I plugged x=5 into u(x) = -5.73

therefore Emech=2+(-5.73)=-3.73 J Is it right?

for the second one Fx= - du/dx so I come up with fx= (4-x)e^(-x/4)

and I stuck . COuld you guy give me a hint thank you

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# Homework Help: Conservative force

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