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] |
I ran a quick analysis using the sum of the forces in the x and y
directions, checked my results, and they appeared to work. Many of my
best students agreed with my answers. However, two of my best
students got a different answer for the tensions - and they agreed
with each other. I checked their results and their arithmetic was
fine. However, they solved the problem using torques about the two
ends of the rod.
It took me a quite few minutes to figure out what was wrong - and I
was quite embarrassed.
The moral of the story is don't make up
quickie problems for an exam.