In the falling ladder problem (pick 2) Group of answer choices Normal forces are unknown but constant We need to write a whole bunch of kinematic equation to get to accelerations Normal forces are zero and mg We use physical constrains (e.g., lower end moves in x-dix only)

L, m, I known A D VB = VO Solve for w, x of the ladder plus the reaction forces at B A B NA UNA 7 maa,x * UNB No