Pr elab for Waves in Strings, Metal Rods, and Air Due: Beginning of lab Question

Question

Pr elab for Waves in Strings, Metal Rods, and Air Due: Beginning of lab Questions: Given a string with a length of 2m and a total mass of 0.15kg, determine the linear density () of this string. If a mass of 20g is hung on one end of the string under the force of gravity giving a tension Tme determine the speed of sound of this string In the procedure for the second activity, the speed of sound in air is given as a function of temperature At 10 c, the speed of sound in air is 337m/s. Humans are capable of generating sounds at frequencies as low as 100Hz. Given this speed of sound and frequency, determine the corresponding wavelength 133

Explanation / Answer

a ) linear mass density u = M /L = 0.15 / 2 =0.075 kg/m

b) V =sqrt( T/u ) = sqrt( 20*10^-3 *9.8 / 0.075 ) =1.61658075 m/s

C )

lambda = V/f = 337 / 100 = 3.37 m

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