不要不诚实
发表于 2025-3-23 13:02:55
Conceiving a New Right to ProcreateThe aim of the present chapter will be to provide an alternative prescription to Newton’s for the writing down of the equations of motion. The guiding principles will be to base considerations on energy expressions as far as possible and to frame all equations to be equally applicable in any generalized co-ordinate system.
Kernel
发表于 2025-3-23 15:13:38
Fundamental Ideas,This chapter is intended as a brief summary of those aspects of mechanics which stem immediately from Newton’s laws and which are particularly important in the development of the Lagrangian and Hamiltonian formulations.
蛙鸣声
发表于 2025-3-23 20:29:43
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observatory
发表于 2025-3-23 22:34:56
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彻底明白
发表于 2025-3-24 03:11:43
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庇护
发表于 2025-3-24 09:44:17
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Restenosis
发表于 2025-3-24 13:26:29
Frida Simonstein,Ekaterina Balabanovantifiable, from previous knowledge, as momenta. It should, however, be firmly emphasized that the term momentum nowhere appears explicitly in connection with the Lagrangian treatment. It is an essential feature of the formalism that the independent variables are the time and the generalized co-ordin
noxious
发表于 2025-3-24 15:28:38
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Ornament
发表于 2025-3-24 22:02:30
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Servile
发表于 2025-3-24 23:36:31
Conceiving a New Right to Procreate this becomes:. The quantity. turns out to be a very significant one in the formal development of mechanics and is called the Poisson bracket of . and .. In general, the Poisson bracket of any two dynamical variables . and . is defined as:. The concept does not assist materially in the complete solu