Suppose that the left-traveling pulse in Exercise 15.32 is ?below the level of the unstretched string instead of above it. Make the same sketches that you did in that exercise. 15.32 .?Interference of Triangular Pulses. Two triangular wave pulses are traveling toward each other on a stretched string as shown in ?Fig. E15.32?. Each pulse is identical to the other and travels at 2.00 cm/s. The leading edges of the pulses are 1.00 cm apart at t = 0. Sketch the shape of the string at t = 0.250 s, t = 0.500 s, t = 0.750 s, t = 1.000 s, and t = 1.250 s.
Solution 33E Step 1 of 7: According to principle of superposition, the net displacement is the algebraic sum of the displacements due to each pulse. The pulses interfere when they overlap but resume their original shape after they have completely passed through each other. The shape of the string at each specified time is shown in Figure Step 2 of 6: Step 3 of 7: Step 4 of 7 Step 5 of 7: Step 6 of 7: Step 7 of 7: