Statics Problem 5-64: Example of a 3D Rigid Body Equilibrium with Fixed Support

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Statics Practice Problem 5-64: Example of a 3D Rigid Body Equilibrium with Fixed Support. A fixed support, limits the motion in all directions, so there would be reaction forces in all x, y and directions. A fixed support limits the rotation about all the axis as well, therefore, it exerts reaction moments in all direction.
A fixed support will introduce six unknowns in total. In presence of fixed support, no other unknown can be present to be able solve the problem.
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Hi professor, I have a question about the relation between number of unknowns and number of equilirium equations.The rule says you can find most 6 unknowns by writing 6 equilibrium equations.So our number of equlibirm equations must be higher than unknowns to be found, right?

yigitcan
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late comment but why isnt rz in moment of y 1.25 ?

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