Statics forces acting on supports

  • Thread starter Thread starter jimbo71
  • Start date Start date
  • Tags Tags
    Forces Statics
Click For Summary
SUMMARY

The discussion focuses on solving a static equilibrium problem involving forces acting on supports. The key forces identified are 12W acting downward at point A and 3W acting downward 2 feet from point B. The equations of equilibrium, specifically the sum of vertical forces and moments, are utilized to establish relationships between the forces Ay and By. A second equation is required to solve for the unknown forces, and the concept of taking moments about a point is emphasized as a necessary step in the solution process.

PREREQUISITES
  • Understanding of static equilibrium principles
  • Familiarity with force summation equations (sum of Fx, sum of Fy, sum of M)
  • Knowledge of moment calculations in physics
  • Ability to interpret force diagrams
NEXT STEPS
  • Study the method of joints in static equilibrium problems
  • Learn how to calculate moments about a point in static systems
  • Explore the application of the equations of equilibrium in two-dimensional force systems
  • Review examples of static force problems involving multiple supports
USEFUL FOR

Students in engineering mechanics, physics students studying statics, and professionals involved in structural analysis will benefit from this discussion.

jimbo71
Messages
80
Reaction score
0

Homework Statement


see attachement


Homework Equations


sum of Fx=0
sum of Fy=0
sum of M=0


The Attempt at a Solution


There are 4 forces that I have found. 12W acting in the negative y direction at A. 3W acting in the negative direction acting 2 feet from pt B. A F acting in the positive y direction from point A and a F acting in the positive direction from point B.
Ay+By-12W-3W=0.
Ay+By=3036lb/ft

Obviously I need a second equation to solve for Ay and By. I'm not sure what other forces I can sum up. I think somehow I want to incorporate a moment force but I don't know what it would be.
 

Attachments

  • 14911-32382-statics.jpg
    14911-32382-statics.jpg
    11.7 KB · Views: 466
Physics news on Phys.org
?
 
Hi jimbo71! :smile:

I can't see your diagram yet, so I'm only guessing …

but there's probably no "moment force" - you just choose a point, and take moments of all the ordinary forces about that point, and equate it to zero. :wink:
 

Similar threads

Equilibrium problem: Multiple forces acting on this hinged, supported beam
  • · Replies 3 ·
Replies
3
Views
1K
Static equilibrium | Uniform sphere on incline | Determining friction
  • · Replies 43 ·
2
Replies
43
Views
3K
How can I determine the instant the block overcomes static friction?
  • · Replies 61 ·
3
Replies
61
Views
4K
How to calculate the wind force acting on a water drop?
  • · Replies 39 ·
2
Replies
39
Views
4K
Help finding the vertical component of the reaction at C
  • · Replies 2 ·
Replies
2
Views
2K
Is it friction or tension acting on the person hanging on a rope?
  • · Replies 4 ·
Replies
4
Views
1K
Force pulling on a string at an angle with a block at the other end
  • · Replies 2 ·
Replies
2
Views
2K
Rolling without slipping problem
  • · Replies 42 ·
2
Replies
42
Views
4K
Force on a rotating wheel/disc
  • · Replies 25 ·
Replies
25
Views
2K
Statically Indeterminate Truck - Finding reaction forces at supports
  • · Replies 8 ·
Replies
8
Views
3K