A wire is strained at 145 N, and its mass per unit length is 0.008 kg/m. A sine wave sent on the wire has an amplitude of 4.5 cm and a wavelength of 1.3 m. Find the greatest speed of a mass element on the wire.

• A. 29.3 m/s
• B. 0.0027 m/s
• C. 134 m/s
• D. 105 m/s

Answer: (A)