Timeline for Work-energy theorem and Newton's second law
Current License: CC BY-SA 4.0
5 events
| when toggle format | what | by | license | comment | |
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| Nov 30, 2022 at 17:24 | comment | added | Cleonis | @Utkarsh I actually downloaded chapter 6 from the site ncert.nic.in, to find out the context. The thing is: on that particular point I disagree with the author of that text. That is why I wrote: "[...] an important thing, that is not appreciated by the author of that book". Note that I only disagree with that particular part. I concur with how in that book the work-energy theorem is introduced: section 6.2, equation (6.2), which is valid in the case of uniform acceleration $v^2 - u^2 = 2 \ as$ That expression is a parallel of eq. (9) in the derivation I presented in my answer. | |
| Nov 29, 2022 at 7:13 | comment | added | Utkarsh | I quoted lines of books in two different comment sections cause there was character limit. In both comments I have written lines of book. | |
| Nov 29, 2022 at 7:11 | comment | added | Utkarsh | 'In this sense, the temporal(time) information contained in the statement of Newton's 2nd law is integrated over and is not available explicitly. Another observation is that Newton's 2nd law for two or three dimensions is in vector form whereas the work energy theorem is in scalar form. In the scalar form, information with respect to directions contained in Newton's 2nd law is not present | |
| Nov 29, 2022 at 7:07 | comment | added | Utkarsh | I was also on the same pages as you but I was confused by the statements of the book.I am now giving you the full statement of book so If there is still you can clear what the book is trying to say. 'While WE theorem is useful in a variety of problems, it does not, incorporate the complete dynamical information of Newton's 2nd law. It is an integral form of Newton's 2nd law. Newton's 2nd law is a relation between acceleration and force at any instant of time. Work-Energy theorem involves an integral over an interval of time.' | |
| Nov 28, 2022 at 18:39 | history | answered | Cleonis | CC BY-SA 4.0 |