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A man of mass 85kg stands on one end of ...

A man of mass 85kg stands on one end of a uniform board of length 2m and mass 15kg. The other end is tied to the floor by a steel cable, and the board is supported from below just 0.5 m from the cable end (see figure).

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T(0.5)=15g x 0.5 +85 g (1.5)
N=1 +100 g
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