VECTOR MECHANICS FOR ENGINEERS: STATICS
VECTOR MECHANICS FOR ENGINEERS: STATICS
VECTOR MECHANICS FOR ENGINEERS: STATICS
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ighth<br />
dition<br />
Vector Mechanics for Engineers: Statics<br />
Equilibrium of a Rigid Body in Two Dimensions<br />
© 2007 The McGraw-Hill Companies, Inc. All rights reserved.<br />
• For all forces and moments acting on a twodimensional<br />
structure,<br />
F 0 M M 0 M M<br />
z<br />
x<br />
• Equations of equilibrium become<br />
y<br />
Fx<br />
0 Fy<br />
0 M A 0<br />
where A is any point in the plane of the<br />
structure.<br />
• The 3 equations can be solved for no more<br />
than 3 unknowns.<br />
• The 3 equations can not be augmented with<br />
additional equations, but they can be replaced<br />
Fx<br />
0 M A 0 M B 0<br />
z<br />
O<br />
4 - 7
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