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A 1 m long uniform wooden plank rests on a roof with 0.4 m of it hanging over the edge, as shown in the figure below. An adventurous squirrel whose mass is half that of the plank begins walking out towards the edge. At what distance “x” beyond the edge of the building does the plank tip? 0.35 m 0.30 m 0.25 m 0.20 m The squirrel can make it all the way to the edge without tipping.