64. Add two swings same direction and the same period of x1 and x2 = A1sinω1t = A2sinω2 (t + τ), where A1 = A2 = 3 cm, ω1 = ω2 = πs-1, τ = 0,5 s. Determine the amplitude A and the initial phase φ0 resulting oscillation. Write its equation. Construct the vector diagram at time t = 0.

Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)