A travelling wave is given by y = −0.21sin(x+ 3t) where x is in m, t is in seconds, y is in mm. (mass per unit length = 0.135 g/cm). Find the tension in the wire.

(a) T = 0.1215 N

(b) T = 20 N

(c) T = 15.35 N

(d) T = 5 N

(a) T = 0.1215 N

(b) T = 20 N

(c) T = 15.35 N

(d) T = 5 N