Friday

October 31, 2014

October 31, 2014

Posted by **Elise** on Monday, January 17, 2011 at 10:24pm.

- physics -
**bobpursley**, Monday, January 17, 2011 at 11:00pmWoulnt 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

**Answer this Question**

**Related Questions**

Math - An architect designs a house that is 12 m wide. The rafters holding up ...

triginomitry - A cottage under construction is to be 12.6 meters wide. The two ...

math - could someone please help.... a cottage under construction is to be 35.6m...

trigonometry ? - A cottage under construction is to be 15.6m wide. The two sides...

Trigonometry - a barn has a gable roof whose rafters are 20 feet long. the width...

algebra - A homeowner wishes to insulate her attic with fiberglass insulation to...

Algebra - A homeowner wishes to insulate her attic with fiberglass insulation ...

trig HELP - A barn is 30ft. wide by 60ft long; the rafters make an angle of ...

Intro to Physics - The gravitational force exerted on a solid object is 5.15 N ...

algebra - A homeowner wishes to insulate her attic with fiberglass insulation to...