Solution_04 - CIV-100F Solutions Section B/E Fall 2011...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: CIV-100F Solutions Section B/E Fall 2011 Assignment 4 Due on Tuesday, October 11 th 2011 Draw a FBD if necessary; Pay attention to significant figures; A ruler is always required. 1- A transmission tower is held by three guy wires attached to a pin A and anchored by bolts at B, C, and D. If the tension in wire AB is 840N, determine the vertical force P exerted by the tower on the pin at A. Solution : FBD is superimposed on original figure. ) 8 . 14 , , 4 ( ) 6 . 3 , , 12 ( ) 5 , , 4 ( ) , 20 , ( = = = = D C B A k m j m i m AB ) 5 ( ) 20 ( ) 4 ( + = k m j m i m AC ) 6 . 3 ( ) 20 ( ) 12 ( + = k m j m i m AD ) 8 . 14 ( ) 20 ( ) 4 ( = m AB 21 = m AC 6 . 23 = m AD 2 . 25 = k N j N i N AB AB N T AB ) 200 ( ) 800 ( ) 160 ( ) 840 ( + = = k T j T i T AC AC T T AC AC AC AC AC ) 15254 . ( ) 84746 . ( ) 50847 . ( + = = k T j T i T AD AD T T AD AD AD AD AD ) 58730 . ( ) 79365 . ( ) 15873 . ( = = 15873 . 50847 . 160 = + = AD AC X T T N F 58730 . 15254 . 200 = + = AD AC Z T T N F Solve the above two equations, we have N T AC 09 . 458 = N T AD 52 . 459 = kN P P T T N F AD AC Y 55 . 1 79365 . 84746 . 800 = = + = P T AD T AC T AB CIV-100F Solutions Section B/E Fall 2011 Assignment 4 Due on Tuesday, October 11 th 2011 Draw a FBD if necessary; Pay attention to significant figures; A ruler is always required....
View Full Document

This note was uploaded on 12/10/2011 for the course CIV 100 taught by Professor Nahrvar during the Spring '08 term at University of Toronto- Toronto.

Page1 / 5

Solution_04 - CIV-100F Solutions Section B/E Fall 2011...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online