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12.33. Model:
The object balanced on the pivot is a rigid body.
Visualize:
Since the object is balanced on the pivot, it is in both translational equilibrium and rotational equilibrium.
Solve:
There are three forces acting on the object: the gravitational force
( )
G
1
F
G
acting through the center of
mass of the long rod, the gravitational force
( )
G
2
F
G
acting through the center of mass of the short rod, and the
normal force
P
G
on the object applied by the pivot. The translational equilibrium equation
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This note was uploaded on 12/10/2011 for the course PHYS 1211 taught by Professor Geller during the Fall '09 term at UGA.
 Fall '09
 geller
 Force

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