Question

A steel wire 70 cm long has a mass of 7 mg. If the wire is under a tension of 100 N,what is the speed of transverse waves in the wire?

Answer 1

Consider a stretched string and if given transverse disturbance on one end then the disturbance travels throughout the string.Thereby giving rise to transverse waves. The particles move up and down and the waves travel perpendicular to the oscillation of the particles.Transverse wave speed determined by:Mass per unit length- As mass gives rise to Kinetic energy.If no mass then no kinetic energy.Then there will be no velocity.It is denoted by μ.Tension-Tension is the key factor which makes the disturbance propagates along the string.Because of tension the disturbance travels throughout the wave.It is denoted by T.



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