When the mass varies due to accretion or ablation, [an alternate equation explicitly accounting for the changing mass] should be used Celestial Mechanics and Dynamical Astronomy
I]t is essential to deal with the same set of particles throughout the time interval[ Metaphysics Research Lab, Stanford University

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قوانين نيوتن للحركة
Hannah, J, Hillier, M J, Applied Mechanics, p221, Pitman Paperbacks, 1971• I Bernard Cohen Peter M
ما هي قوانين نيوتن؟ 4 قوانين فيزيائية فسرت الحركة والجاذبية
"On the use and abuse of Newton's second law for variable mass problems"
مرام هواري: قانون القوة.. وهستيريا البقاء
Cambridge UK: Cambridge University Press
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 Cambridge UK: Cambridge University Press
Any single force is only one aspect of a mutual interaction between two bodies ] Consequently, the mass of the system can not change during the time of interest

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كيفية حساب مقدار القوة: 6 خطوات (صور توضيحية)
قانون القوى العاملة
عزم القوة

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قانون لورنتس
قانون كولوم
مرام هواري: قانون القوة.. وهستيريا البقاء