I]t is essential to deal with the same set of particles throughout the time interval[ I Bernard Cohen Peter M
Hannah, J, Hillier, M J, Applied Mechanics, p221, Pitman Paperbacks, 1971• Metaphysics Research Lab, Stanford University Celestial Mechanics and Dynamical Astronomy

ما قانون القوة

] Consequently, the mass of the system can not change during the time of interest.

حساب القوة العمودية
Quoting Newton in the Principia: It is not one action by which the Sun attracts Jupiter, and another by which Jupiter attracts the Sun; but it is one action by which the Sun and Jupiter mutually endeavour to come nearer together
قوانين نيوتن للحركة
Cambridge UK: Cambridge University Press
عزم الدوران
Any single force is only one aspect of a mutual interaction between two bodies Cambridge UK: Cambridge University Press
When the mass varies due to accretion or ablation, [an alternate equation explicitly accounting for the changing mass] should be used "On the use and abuse of Newton's second law for variable mass problems"

عزم القوة


ما قانون القوة
كيفية حساب مقدار القوة: 6 خطوات (صور توضيحية)
مرام هواري: قانون القوة.. وهستيريا البقاء