Q. The equation of a wave on a string of liner mass density 0.04 kg$m^{- 1}$is given by $y = 0.02(m)\sin\left\lbrack 2\pi\left( \frac{t}{0.04(s)} - \frac{x}{0.50(m)} \right) \right\rbrack$. the tension in the string is

A) 4.0N
B) 12.5N
C) 0.5N
D) 6.25N
Explanation

(d) $T = \mu v^{2} = \mu\frac{\omega^{2}}{k^{2}} = 0.04\frac{\left( \frac{2\pi}{0.004} \right)^{2}}{\left( \frac{2\pi}{0.50} \right)^{2}} = 6.25N$

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.

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