A 6.0m-long string with uniform linear mass density μ=0.040kg/m is attached at one end to a wall and at the other end to a pulley system that can adjust the string’s tension. A single transverse pulse is generated at the wall end and is observed to arrive at the pulley end 0.75s after it is created.
(a) Determine the speed of the pulse along the string.
(b) Using your answer to part (a), calculate the tension that must have been present in the string during the observation.
(c) The tension is now increased by 20% while the linear mass density remains unchanged. Calculate the new time it would take an identical pulse to travel the 6.0m length of the string.