small bird is jumping up and down on an electrical transmission wire at the location indicated below, setting up a transverse standing wave that is the fourth harmonic for the tretched wire. (The bird is obviously not drawn to scale. Assume that his mass is small com- pared to the mass of the wire.)
small bird is jumping up and down on an electrical transmission wire at the location indicated below, setting up a transverse standing wave that is the fourth harmonic for the tretched wire. (The bird is obviously not drawn to scale. Assume that his mass is small com- pared to the mass of the wire.)
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Answer
a) a node
b) 50 m
c) 100 m/s
d) 6000 N
Transcribed Image Text:** 9. A small bird is jumping up and down on an electrical transmission wire at the location
indicated below, setting up a transverse standing wave that is the fourth harmonic for the
retched wire. (The bird is obviously not drawn to scale. Assume that his mass is small com-
pared to the mass of the wire.)
25 m
100 m
a) Is the bird hopping at a node or an antinode? Draw a picture of this standing wave to
justify your answer.
b) Find the wavelength for this standing wave.
c) If the bird is hopping with a period of T= 0.5 s, find the speed of traveling waves on
this wire.
d) If 100 m of wire has a mass of 60 kg, what is the tension F in the wire?
at The string has a linear
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