In the video, the torque due to the mass of the plank is used in the calculations. for this question, ignore the mass of the board. rank, from largest to smallest, the mass m needed to keep the board from tipping over. to rank items as equivalent, overlap them.

if you answer my question i will answer yours

firearm identification is the process of analyzing the bullets and cartridge cases left at a crime scene to determine if they came from a particular firearm. marks on the bullets and cartridges may be common to every firearm of that type. these are called class characteristics.