6. A cord of ρ = 30 g/m is tightly tied between two
strong posts a distance 3.0 m apart, so that it is under a tension
of 100 N.
The cord is plucked so that resonant standing waves are set
up.
(a) Find the three longest wavelengths that are allowed in the
cord.
(b) Find the corresponding frequencies.
(c) The tension is now adjusted so that the new fundamental
frequency corresponds to that of the second overtone in
part (b);find the new tension.
7. A brass rod is firmly clamped at the center and when tapped at
one end resonates longitudinally with a fundamental of
2000 Hz.
(a) What characterizes the resonant standing waves at the rod
ends?
(b) What next higher frequency would you expect to be resonating
under the conditions described, and why?
6. A cord of ρ = 30 g/m is tightly tied between two strong posts a...
Q. A steel wire with mass 37.0 g and length 7.10 m is stretched tightly between its two endpoints. In its fundamental mode, the wire vibrates at a frequency of 59.0 Hz. When plucked, traveling waves bounce from one end to the other. a) What is the speed of waves propagating along the wire? b) Calculate the tension in the wire. c) A standing wave at the fundamental frequency has an amplitude of 0.340 cm . Calculate the magnitude of...