12_P33InstructorSolution - 12.33 Model The object balanced...

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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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