A cord of mass 0.75 kg is stretched between two supports 28 m apart. part a if the tension in the cord is 140 n , It will take 0.39 seconds for a pulse to travel from one support to the other
Time taken to travel from one support to other = change in position / speed
Time taken = Δx / [tex]\sqrt{Force * L / mass}[/tex]
= 28 / [tex]\sqrt{140 * 28 / 0.75}[/tex]
= 0.39 seconds
A pulse will take 0.39 seconds to travel from one support to the other
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