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Two waves are traveling in opposite directions on the same string. The displacem

ID: 1918919 • Letter: T

Question

Two waves are traveling in opposite directions on the same string. The displacements caused by the individual waves are given by y1 = (24.2 mm)sin(9.00?t ? 1.25?x) and y2 = (38.1 mm)sin(2.88?t + 0.400?x). Note that the phase angles (9.00?t ? 1.25?x) and (2.88?t + 0.400?x) are in radians, t is in seconds, and x is in meters. At t = 3.88 s, determine the net displacement (in mm) of the string for the following values of x. Be sure to include the algebraic sign (+ or ?) with your answers. (a) x = 2.00 m mm (b) x = 2.30 m mm

Explanation / Answer

y1=24.2 sin(9.00*pi*3.88-1.25*pi*2.00) y2=38.1 sin(2.88*pi*3.88-0.40*pi*2.00) b.) Try this one on your own. It should just be a matter of plugging in the right numbers.