http://hyperphysics.phy-astr.gsu.edu/hbase/oscda2.html#c2 http://hyperphysics.phy-astr.gsu.edu/hbase/oscda2.html http://hyperphysics.phy-astr.gsu.edu/hbase/oscda2.html critical damping overdamped http://hyperphysics.phy-astr.gsu.edu/hbase/oscda2.html critical damping http://hyperphysics.phy-astr.gsu.edu/hbase/oscda2.html http://hyperphysics.phy-astr.gsu.edu/hbase/oscda2.html