Register to reply

Basic Statics problem, forces on a Truss

by coffeebird
Tags: basic, forces, statics, truss
Share this thread:
coffeebird
#1
Feb15-13, 06:49 PM
P: 15
1. The problem statement, all variables and given/known data

The truss is supported by a pin at A and roller at B. Determine the support reactions.



2. Relevant equations

sum of forces along y-axis, sum of forces along x-axis, sum of all torques



3. The attempt at a solution

Sum of x= Fax+ Fbx+ 5sin45=0
Sum of y=Fay+Fby-10 -5sin45=0

I would like to know how the forces act on the truss, and why. It hasn't been very well explained to me. Thank you : )
Attached Thumbnails
truss.jpg  
Phys.Org News Partner Science news on Phys.org
Sapphire talk enlivens guesswork over iPhone 6
Geneticists offer clues to better rice, tomato crops
UConn makes 3-D copies of antique instrument parts
pongo38
#2
Feb16-13, 01:44 AM
P: 696
In a real structure there would be a lot more forces representing self-weight, snow, wind, loads from internal cranes etc. In this case, which is a 'learning example' you could imagine the 10 kN load as representing the self weight and other permanent loads, and the 5 kN load as a simplified wind load, which, in reality would be a variable distributed load.


Register to reply

Related Discussions
Weird Statics Truss Problem - Finding reactions Engineering, Comp Sci, & Technology Homework 11
Statics Truss Problem Involving Method of Sections Engineering, Comp Sci, & Technology Homework 1
Forces in Truss Members (Statics) Introductory Physics Homework 7
Statics: bad solution to simple truss problem regarding determinancy Introductory Physics Homework 5
Statics Problem - Truss Engineering, Comp Sci, & Technology Homework 4