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3 questions with no upvoted or accepted answers
1 vote
1 answer
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What is the difference between zero and an infinitesimal number?

In a standard Atwood machine physics problem, the string going over the pulley is considered massless. So does that imply mass = 0 or mass = dm? General question: what is the difference between 0 and ...
Curious 's user avatar
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0 answers
126 views

Work-Energy Principle Derivation

I am currently in Mechanics I and both my professor and my book have derived the work principle in this way and I even asked about its derivation during class, but it has me puzzled. I don't ...
HappyHiggs's user avatar
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0 answers
142 views

How to calculate the derivative of the angular momentum vector $ d\vec L = d(\hat I \vec \omega)?$

My last question, but also the most important one How to calculate the derivative of the angular momentum vector? $$ d\vec L = d(\hat I \vec \omega)$$ I'm especially interested in derivative tensor to ...
Sylwester L's user avatar