This preview shows pages 1–5. Sign up to view the full content.
EQUATIONS OF EQUILIBRIUM IN 2D
Today’s Objectives:
a)
Apply equations of equilibrium to
solve for unknowns, and,
b)
Recognize twoforce members.
InClass Activities:
•
Applications
•
Equations of equilibrium
•
Twoforce members
•
Questions and problems
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document APPLICATIONS
For a given load on the
platform, how can we
determine the forces at
the joint A and the force
in the link (cylinder) BC?
APPLICATIONS
(continued)
A steel beam is used to support
roof joists.
How can we
determine the support reactions
at each end of the beam?
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document EQUATIONS OF EQUILIBRIUM (Section 5.3)
A body is subjected to a system of forces
that lie in the xy plane.
When in
equilibrium, the net force and net moment
acting on the body are zero (as discussed
earlier in Section 5.1).
This 2D condition
can be represented by the three scalar
equations:
∑
F
x
= 0
∑
F
y
= 0
∑
M
O
= 0
Where
point O is any arbitrary point.
Please note
This is the end of the preview. Sign up
to
access the rest of the document.
This note was uploaded on 12/06/2010 for the course CHEM 141 taught by Professor Freeman during the Spring '10 term at Columbia SC.
 Spring '10
 Freeman
 Chemistry, Equilibrium

Click to edit the document details