在前面
发表于 2025-3-23 13:37:39
The treatises of mechanics,resented. To point out the introduction of modern term ., the introduction of the problems associated with friction and finally the change in the ontological status of virtual work. From simple mathematical to physical magnitude.
纬线
发表于 2025-3-23 16:04:34
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重叠
发表于 2025-3-23 20:28:02
Arabic and Latin science of weights,efficacy of a weight on a scale is the greater the more its virtual displacement is next to the vertical. Another VWL is associated with the resistance of a weight to be lifted, which depends on the lifting entities in a given time. In formulas: . p . h . p/n . nh.
享乐主义者
发表于 2025-3-24 00:19:43
Italian Renaissance statics, according to which anything that can lift a weight . of a height . can raise . of .. In the central part the contributions of Girolamo Cardano, Guidobaldo dal Monte and Giovanni Battista Benedetti are presented, all of which somehow refer to a VWL.
群岛
发表于 2025-3-24 02:39:45
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Insufficient
发表于 2025-3-24 07:49:02
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Minutes
发表于 2025-3-24 13:06:43
The Jesuit school of the XVIII century,ion of Angiulli and his demonstration of VWL is presented in the . route. This is perhaps the first convincing demonstration of a VWL. In the second part the contribution of Vincenzo Riccati is presented.
interpose
发表于 2025-3-24 17:11:52
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Explosive
发表于 2025-3-24 21:08:56
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使长胖
发表于 2025-3-25 02:55:28
Thermodynamical approach,This chapter is devoted to the use of the VWL where to virtual work is given a mechanical meaning. In the first part, notes on mechanics derived from Pierre Duhem’s thermodynamics are presented. In the second part the derivation of a VWL from the law of conservation of energy is shown.