Asked by Elise
The rafters of a roof meet at an angle of 120 degrees. What force is exerted along the rafters by an object weighing 6000nt suspended from the peak?
Answers
Answered by
bobpursley
Woulnt each rafer be supporting 3000N, so the compressive force is given by
cosine60 = 3000/compressive force
and solve for the compressive force. This gives you an idea why in past times flying buttresses were invented...to keep the walls from flying away.
http://www.google.com/images?q=flying+buttresses&oe=utf-8&rls=org.mozilla:en-US:official&client=firefox-a&um=1&ie=UTF-8&source=og&sa=N&hl=en&tab=wi&biw=1219&bih=724
cosine60 = 3000/compressive force
and solve for the compressive force. This gives you an idea why in past times flying buttresses were invented...to keep the walls from flying away.
http://www.google.com/images?q=flying+buttresses&oe=utf-8&rls=org.mozilla:en-US:official&client=firefox-a&um=1&ie=UTF-8&source=og&sa=N&hl=en&tab=wi&biw=1219&bih=724
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.