A point mass is subjected to two simultaneous sinusoidal displacements in x-direction, x1(t) = A sin omega t and x2(t) = A sin (omega t + 2 pie/3). Adding a third sinusoidal displacement A point mass is subjected to two simultaneous sinusoidal displacements in x-direction x1(t) = A sin omega t and x2(t) = A [...]