Ask Question
17 December, 20:03

A phone cord is 6.16 m long. The cord has

a mass of 0.261 kg. A transverse wave pulse is produced by plucking one end of the taut cord. The pulse makes four trips down and back along the cord in 0.921 s.

What is the tension in the cord?

Answer in units of N.

+1
Answers (1)
  1. 17 December, 20:12
    0
    Answer: 121.10N

    Explanation:

    Velocity = square root of (tension/mass per length)

    The velocity can be found by the total length over the total time (v=x/t). There were 4 trips there and back. That is, 8 total lengths (4 one way 4 the other) of the rope.

    8 trips * 6.16m = 49.28m in total.

    The total time is given as 0.921secs

    So, 49.28/0.921 = 53.507m/s.

    Mass per length is given as:

    0.261/6.16 = 0.0423kg/m

    Make tension the subject of the formula.

    Tension = (mass per length) * (velocity^2)

    Tension = (0.0423kg/m) * (53.507m/s) ^2

    Tension = 121.10N

    Therefore, the tension of the cord is 121.10N
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “A phone cord is 6.16 m long. The cord has a mass of 0.261 kg. A transverse wave pulse is produced by plucking one end of the taut cord. The ...” in 📘 Physics if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers