A transverse wave travels along a string with speed 40 m/s. The string has linear mass density 0.025 kg/m. If the tension in the string is N newtons, find N.
Physics · Wave Motion · question based on string wave
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Question

A transverse wave travels along a string with speed 40 m/s. The string has linear mass density 0.025 kg/m. If the tension in the string is N newtons, find N.

G1 Physics · Accepted Answer

For a stretched string, v² = T/μ. Therefore, T = μv². Substitute μ = 0.025 kg/m, v = 40 m/s. Then, T = 0.025×40² = 0.025×1600 = 40 N. Hence, N = 40.