Which of the following represent travelling wave? (1) y = A sin (15 t – 2x) (2) y = A cos (15 t) sin 2x (3) y = A sin (15 t) cos 2x (4) y = A e–x cos (15 t – 2x)

Consider a mass-spring system where a 4 kg mass is attached to a massless spring of constant k 196 N/m; the system is set to oscillate on a frictionless, horizontal table. The mass is pulled 25 cm away from the equilibrium position and then released. (2 ...

Identify the function which represents a periodic motion. (1) e–ωt (2) eωt (3) loge(ωt) (4) sinωt + cosωt

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