Reaction forces on a structure

  • Thread starter member 392791
  • Start date
  • #1
member 392791

Homework Statement



Problem 4.36
http://xps2pdf.co.uk/4c82ad8dcb91d5507169e0a18804ea30bf81d592/4.36.pdf [Broken]

Homework Equations





The Attempt at a Solution


I am not sure if I am doing this correctly..there is a lot of information that I am not using to solve the problem (i.e. all the different distances, as well as the 30°. When determining the direction of a reaction force (Say A for example) do I just pick an arbitrary direction and if it comes out negative I know it's direction is opposite of what I put it as? I chose the moment at point A because I knew the moments of force A would be zero, leaving me with only the applied force and force E, which has a roller on it so it can only have a reaction force in one direction.
 

Attachments

Last edited by a moderator:

Answers and Replies

  • #2
PhanthomJay
Science Advisor
Homework Helper
Gold Member
7,165
507
Can't open the first file, but based on your work:

Homework Statement



Problem 4.36
http://xps2pdf.co.uk/4c82ad8dcb91d5507169e0a18804ea30bf81d592/4.36.pdf [Broken]

Homework Equations





The Attempt at a Solution


I am not sure if I am doing this correctly..
looks good
there is a lot of information that I am not using to solve the problem (i.e. all the different distances, as well as the 30°.
you don't need them if you are just looking for reactions
When determining the direction of a reaction force (Say A for example) do I just pick an arbitrary direction and if it comes out negative I know it's direction is opposite of what I put it as?
yes
I chose the moment at point A because I knew the moments of force A would be zero, leaving me with only the applied force and force E, which has a roller on it so it can only have a reaction force in one direction.
good!
 
Last edited by a moderator:
  • Like
Likes 1 person

Related Threads on Reaction forces on a structure

  • Last Post
Replies
5
Views
1K
Replies
2
Views
553
Replies
1
Views
644
Replies
5
Views
4K
Replies
3
Views
710
Replies
0
Views
10K
Replies
0
Views
875
  • Last Post
Replies
7
Views
670
Replies
9
Views
2K
Replies
11
Views
4K
Top