Is the Origin for a Sawhorse at C or -D/2?

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The discussion centers on the placement of the origin for a sawhorse, questioning whether it should be at point C or at -D/2. Participants clarify that if the origin is at C, the center of mass (M) of the plank would indeed be at C, making M equal to 0 from that origin. There is confusion regarding the distance between C and the left support point, which is noted as -D/2. The conversation highlights the importance of accurately identifying the origin to solve related problems effectively. Overall, the dialogue emphasizes the need for clear problem statements in discussions.
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Summary: So we are just going to ignore the distance between C and the left support point (-D/2)? If the origin is at C, doesn't this mean M is -D/2 from the origin? In the evaluation, they clearly acknowledged that there is a distance between C and xp which is (-D/2)...

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sjogosk said:
If the origin is at C, doesn't this mean M is -D/2 from the origin?
If the origin is at C and the center of mass of the plank (M) is at C then this means that M is 0 from the origin, surely.
 
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Oh okay yeah I misread the question..the M is the mass of the plank not some other object. Thanks
 

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