A uniform plank of length 4.7 m and weight 221 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support (see the..

A uniform plank of length 4.7 m and weight 221 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support (see the drawing). To what distance x can a person who weighs 440 N walk on the overhanging part of the plank before it just begins to tip?