In the Vibrating Strings experiment, you measure L = 76.5 cm when n = 3. Given t

Question

In the Vibrating Strings experiment, you measure L = 76.5 cm when n = 3. Given that f= 120 Hz, what is the wave speed, in m/s? You are visiting a distant planet and while you are there you repeat the Vibrating Strings experiment. When you plot l^2/m versus^2/mu the data fell near a straight line that has slope 0.0120 cm. You know that the motor that is used to produce the waves makes waves that have a frequency of 80.0 Hz. What is the value of g, the acceleration due to gravity on this planet, in units of m/s^2? m/s^2 You repeat the Vibrating Strings experiment (this time on Earth where g = 9.80 m/s^2) with a different string than the ones used in lab. A mass of M = 65.0 grams suspended from the end of the string produces a standing wave pattern with two antinodes. The distance between the nodes is 30.0 cm. The l^2/m versus l^2/mu slope of your graph is 0.0150 cm. What is the mass per unit length mu of the string, in grams/cm?

Explanation / Answer

frequency = speed of wave / 2L

120 = speed of wave / (2 * 0.765)

speed of wave = 183.6 m/s

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