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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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Having Trouble With The Principle Of Conservation Of Momentum For a Multiparticle System

The answer is this:$$\sum_{\alpha}\sum_{\beta\neq\alpha}F_{\alpha\beta}=\sum_{\alpha}\sum_{\beta>\alpha}(F_{\alpha\beta}+F_{\beta\alpha})$$ We conclude that $$\dot{P}=\sum_{\alpha}F^{ext}_{\alpha}\equ …
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1 vote
2 answers
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Having Trouble With The Principle Of Conservation Of Momentum For a Multiparticle System

I'am reading John Taylor's Classical Mechanics chapter 1 page 20 where he proves the principle of conservation of momentum which states "If the net external force $F^{ext}$ on an $N$-particle system i …
alok's user avatar
  • 472
3 votes
2 answers
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Question Based On Galileo's Law Of Falling Bodies

Galileo discovered that the distance fallen is proportional to the square of the time it has been falling.Why is it proportional to the square of the time and not just time? i.e $d \propto t^2$ why no …
alok's user avatar
  • 472
2 votes
5 answers
3k views

Are Uncertainties in Measurements Important?

In the first lecture of MIT's Classical Mechanics Prof. Lewin highlights the importance of uncertainties in measurements by quoting "Any measurements, without the knowledge of uncertainty is meaningle …
alok's user avatar
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1 vote
1 answer
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Question Concerning Dimensional Analysis

In the first lecture of MIT's Classical Mechanics Professor Lewin talks about Dimensional Analysis.He talks about an apple being dropped from a certain height can be quantitatively expressed as the fo …
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