A 4.0 kg block is suspended from the ceiling of an elevator through a, string having a linear mass density of 19.2 x 10 -3 kg/m. Find the speed (with respect to the string) with which a wave pulse can proceed on the string) with which a wave pulse can proceed on the string if the elevator accelerates up at the rate of 2.0 m/s2. Take g =la m/s2.
