Question

While you are stuck at home due to the pandemic, you decided to do something fun and you attached a rope between your window and your friend’s. She lives in a nearby apartment building and there is an 8 m gap between the two buildings. The idea is to use the rope to send traveling wave pulses to shake her window, whenever you want to talk. The full length of the rope is 10 m and it weighs 0.1 kg.

If you want the pulse to reach your friend’s window in 2 s, what should be the tension of the rope? Express your answer in units of Newtons, but enter only the numeric answer. Round your answer to 3 decimal places.

Answer 1