what distance can a person who weights 453 N walk on a overhanging part of a plank before it tips?

Question

the plank is 4.5 m and weights 202N resting on 2 supports with 1.1m overhang. first plank at front then 3.4 m to the 2nd. and 1.1m after the 2nd

Answer 1

Sum the torques at the edge of the 1st support 1.1m from the overhanging end.
The plank center of mass is
(4.5/2-1.1)*202
and the person will be 453*x
at the tipping distance, these will be equal
x=(4.5/2-1.1)*202/453
x=.513 m from the support.

j