A board of mass 3.15 kg is balanced on two supports, which are a distance 2.60 m apart. It is balanced so that its center of mass is in the middle of…

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A board of mass 3.15 kg is balanced on two supports, which are a distance 2.60 m apart. It is balanced so that its center of mass is in the middle of the supports, as shown below. The beam has a length 10.0 m . Mary, who has a weight of 376 N , starts walking from the left support to the right. How far does she get before the board tips?

 

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