Chronology | Current Month | Current Thread | Current Date |
[Year List] [Month List (current year)] | [Date Index] [Thread Index] | [Thread Prev] [Thread Next] | [Date Prev] [Date Next] |
If no net change in KE occurs from beginning to end, and no net change in PE
occurs from beginning to end, then the lifter did no work on the barbell -
pure and simple. Why is there a discussion on this? Are we making up an
alternate definition of work?
The fact that this doesn't jibe with our intuition probably just means that
the work-KE theorem is probably not the clearest way to present physics to
students.
Bob at PC