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Unformatted text preview: Give numeric values for all positions, heights and widths. (Graph paper might help.)
(b) Graph the kinetic energy density as a function of x at (i) t=0 s and (ii) t=2 s.
(c) Graph the potential energy density as a function of x at (i) t=0 s and (ii) t=2 s.
(d) What are the total kinetic energy and the total potential energy at (i) t=0 s and (ii) t=2
(e) What is the total energy of the string at (i) t=0 s and (ii) t=2 s? Is energy conserved? 2. Superposition and Energy. Consider two triangular pulses of width W and height
+A, which are launched from opposite ends of a string toward each other. The string
tension is τ and mass per unit length is µ.
(a) What is the total energy of each pulse? What is the total energy of the string when
the pulses are widely separated? Physics 2214, Spring 2012 1 Cornell University TA's Name:_____________________________________Section: ____
Your Name: ____________________________________
(b) What is the total energy of the string at the instant when the two pulses are
completely overlapping? (Hin...
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