Consider a Lagrangian system, with configuration space R^n, given by (x^1, ... x^n); and Lagrangian L(x', ..., x^n; v^1, ... v^n). Now consider a new system of coordinates, (y^1,... ^n), for this same system, so the y's are functions of the x's; and, inverting, the x's are also functions of the y's. Find the Lagrangian in the y-coordinate system, and show that it produces the same physical equations of motion for the system as does the Lagrangian in the x-coordinate system.

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We use the general formulas of multivariate calculus and the ...

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... look at how the value of $S$ changes if we ... The change in $S$ to first order in $\eta$ is ... setting where problems are formulated in general coordinates from the ...

... such that E[h] is minimal then if you changed h(r ... ch(r) is a small perturbation, then the change in E ... In our case we cannot consider arbitrary changes ch(r) in ...

... 1.11b) shows that the quantity x 2 does not change with time. ... We have two generalized coordinates, so we have two equations of motion: ... For the x coordinate: ...

... Introduce suitable generalized coordinates and find the Lagrangian of the ... Hence, change in length of spring along X-axis = L.sqrt(2) - 2.x Hence, change...

... dA 1 = r×p Divide by dt, and change v to (1/m)p dt 2m The angular momentum is constant, so ... Central Forces in Polar Coordinates Let's use the Lagrangian: ...

... of any brand reference -- a welcomed change for some ... sales are denominated in US dollars, changes in the ... of US dollars causing OPEC to consider changing its oil ...

... the equation for mass two you just need to change the index 1 to 2. Now, the power of the Lagrangian method comes ... 2 x/dt^2 if x is not a cartesian coordinate. ...

... and $t_{2}$), you find that the change in the ... If it is stationary in one coordinate system it is ... variables and the radius in spherical coordinates, and write $L ...

... has a mass of M and its leftmost coordinate be x ... Thus to an observer on the outside the block's coordinates are ... & & & & & 2 The potential energy changes only for ...