Register to reply

Basic Statics problem, forces on a Truss

by coffeebird
Tags: basic, forces, statics, truss
Share this thread:
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
Phys.Org News Partner Science news on
What lit up the universe?
Sheepdogs use just two simple rules to round up large herds of sheep
Animals first flex their muscles
Feb16-13, 01:44 AM
P: 699
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