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Solution 14.1a

From Mechanics

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Current revision (09:29, 8 March 2011) (edit) (undo)
 
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The weight acts at the middle point of the beam that is distance 0.5 m from <math>A</math>.
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Taking moments about the point <math>A</math>:
Taking moments about the point <math>A</math>:

Current revision

The weight acts at the middle point of the beam that is distance 0.5 m from A.

Taking moments about the point A:

1.5RB=0.5209.8RB=1.50.5209.8=65.3 N

Taking moments about the point B:

1.5RA=1209.8RA=1.51209.8=130.7 N

Or use

RA+RB=209.8 N

and only one of the above moment equations.