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Results tagged with classical-mechanics
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user 37381
Classical mechanics discusses the behaviour of macroscopic bodies under the influence of forces (without necessarily specifying the origin of these forces). If it's possible, USE MORE SPECIFIC TAGS like [newtonian-mechanics], [lagrangian-formalism], and [hamiltonian-formalism].
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How to check $\mathbf v' · \mathbf V$ and $\mathbf v'^2$ are time derivatives of some other ...
From Landau, Lifshitz Mechanics p.127
$$
\renewcommand{\vec}[1]{\mathbf{#1}}
L'=\frac{1}{2}m(\vec{v}'^2+\vec{v'}\cdot\vec{V}+\vec{V}^2)-U
$$
He states that "$\vec{V}^2(t)$ can be written as the tota …
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