The tension in the given phone cord is 174.3 N.
Speed of the wave
v = fλ
v = (n/t) x 2L
v = (4/0.617) x (2 x 4.89)
v = 63.4 m/s
Tension on the rope
v = √T/μ
μ = 0.212/4.89 = 0.0434 kg/m
v² = T/μ
T = v²μ
T = (63.4)² X 0.0434
T = 174.3 N
the tension in the given phone cord is 174.3 N.
When two opposing pressures pull on a rope, string, or wire, the force communicated through the object is known as tension. The energy is pulled equally on the bodies at the ends by the tension force, which is applied over the entire length of the wire. The International System of Units (SI) uses newtons as the unit of tension measurement for transmitted forces, action-reaction pairs of forces, and restoring forces (or pounds-force in Imperial units).
Learn more about Tension here:
https://brainly.com/question/17073019
#SPJ4
