Which of the following equations is used for evaluating a retaining structure's factor of safety of against overturning (FS_o)?

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The equation FS_o = resisting moment / overturning moment is used for evaluating a retaining structure's factor of safety with respect to overturning. Typically, a minimum factor of safety of 2.0 to 3.0 is considered necessary for a retaining wall to resist rotating outward around the toe of the wall. FS_o is expressed as follows: FS_o = ?Mr / ?Mo Where ?Mr is the sum of the resisting moments around the toe and ?Mo is the sum of the overturning moments around the toe

Which of the Following Equations Is Used for Evaluating a Retaining