CSET question: We understand that we cannot exert a force on one's self in order to achieve motion. Construct an argument to explain how swings work in terms of Newton 3 laws of
motion. please help me?

Auniform brick of length 25 m is placed overthe edge of a horizontal surface with a maximum overhang of 12.5 m attained withouttipping. now two identical uniform bricks of length25 m are stacked over the edge of a horizontalsurface. what maximum overhang is possible forthe two bricks (without tipping)? answer in units of m.