A rope, under a tension of 209 N and fixed at both ends, oscillates in a second-harmonic standing wave pattern. The displacement of the rope is given by
What are (a) the length of the rope, (b) the speed of the waves on the rope, and (c)the mass of the rope? (d) If the rope oscillates in a third-harmonic standing wave pattern, what will be the period of oscillation?
The Attempt at a Solution
I have solved part a,b,c but I got part d wrong. I simply used T=2π/w
And this is not the correct answer.
Please point out where I did wrong