- #1
humanist rho
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Homework Statement
A particle of mass m moves in 1D such that it has Lagrangian,
[itex]L=\frac{m^{2}\dot{x}^{4}}{12}+m\dot{x}^{2}V(x)-V_{2}(x)[/itex]
where V is some differentiable function of x.Find equation of motion and describe the nature of motion based on the equation.
The Attempt at a Solution
Equation of motion is,
[itex]\frac{d}{dt}(\frac{m^{2}\dot{x}^{3}}{3}+2m\dot{x}V(x))-m\dot{x}^{2}\frac{%
\partial V}{\partial x}+\frac{\partial V_{2}}{\partial x}=0[/itex]
[itex]m^{2}\dot{x}^{2}\ddot{x}+2m\ddot{x}V(x)-m\dot{x}^{2}\frac{\partial V}{%
\partial x}+\frac{\partial V_{2}}{\partial x}=0[/itex]
How can i predict nature of motion from this?
Thanks.