Note that since xcritical, as computed in the previous part, is not necessarily positive. if xcritical< 0, the bar will be stable no matter where the block of mass m2 is placed on it.

assuming that m1, d, and l are held fixed, what is the maximum block mass mmax for which the bar will always be stable? in other words, what is the maximum block mass such that xcritical? 0?

answer in terms of m1, d, and l.