Question

a

yur-LUI. ered ut of A metal rod with a length L = 193.2 cm is clamped x = 32.2 cm from one end (Figure 1). It is then vibrated longitudinally with a variable frequency source. The speed of sound in the rod is 4135 m/s. Clamp Figure 1: A metal rod of length L clamped at x cm from one end. Part 1) For this configuration, what is the longest possible wavelength for a standing wave that can be set up? cm Part 2) What frequency is the frequency source set to for this note? Hz Part 3) Assume that the rod can not be clamped at its ends. How far from the left end should the rod be clamped to set up the standing wave with the longest possible wavelength? cm

Answer 1

a d - 4 (22) =) 44 32.2 128-8cm 129 cm b) v=fd 4135=f(128-8) t=4135x100 - 128.8 5 3210.4 f> 32 10 Hz (0) A = £ 20 = 1932 x-196.6 cm