Consider a pulse incident on the free end of a spring as chown. Note that the leading edge of the pulse is 2 squares wide and the trailing edge is 4 squares wide. a. Would the reflected and incident pulses be on the same side of the spring or on opposite sides? Would you expect the incident and reflected pulses to have the same leading edge or different leading edges? Explain. (Hint: Which part of the wave hits the boundary first?) D. Sketch the shape of the reflected pulse on the diagram at right.

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to predict the shape and orientation of a pulse reflected from the fixed end of a spring. We can
extends past the free end. We then imagine sending a pulse with the appropriate shape and
develop a similar model for free-end reflection. In this case as well, we imagine that the spring
location on this imaginary portion of spring toward the incident pulse so that, as the pulses pass
cup
orial Superposition and reflection of pulses, we developed a model that we can use
h other, the appropriate boundary condition at the free end is satisfied.
2 Consider a pulse incident on the free end of a spring as
shown. Note that the leading edge of the pulse is 2 squares
wide and the trailing edge is 4 squares wide.
Before
Free
V end
a. Would the reflected and incident pulses be on the same
side of the spring or on opposite sides?
Would you expect the incident and reflected pulses to
have the same leading edge or different leading edges?
Explain. (Hint: Which part of the wave hits the
boundary first?)
After
Free
Vend
D. Sketch the shape of the reflected pulse on the diagram
at right.
©Pearson Custom Publishing
Tutorials in Introductory Physics
McDermott, Shaffer, & P.E.G., U. Wash.
Updated Preliminary Second Edition, 2011
Transcribed Image Text:to predict the shape and orientation of a pulse reflected from the fixed end of a spring. We can extends past the free end. We then imagine sending a pulse with the appropriate shape and develop a similar model for free-end reflection. In this case as well, we imagine that the spring location on this imaginary portion of spring toward the incident pulse so that, as the pulses pass cup orial Superposition and reflection of pulses, we developed a model that we can use h other, the appropriate boundary condition at the free end is satisfied. 2 Consider a pulse incident on the free end of a spring as shown. Note that the leading edge of the pulse is 2 squares wide and the trailing edge is 4 squares wide. Before Free V end a. Would the reflected and incident pulses be on the same side of the spring or on opposite sides? Would you expect the incident and reflected pulses to have the same leading edge or different leading edges? Explain. (Hint: Which part of the wave hits the boundary first?) After Free Vend D. Sketch the shape of the reflected pulse on the diagram at right. ©Pearson Custom Publishing Tutorials in Introductory Physics McDermott, Shaffer, & P.E.G., U. Wash. Updated Preliminary Second Edition, 2011
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