Solving a problem in physics, section 41, paragraph 1

Solving a problem in physics, section 41, paragraph 1

1. The phase difference between two equally directed harmonic oscillations constant period T = 4, and with the same amplitude A = 5 cm is π / 4. Write the equation of motion resulting from the addition of these oscillations, if the initial phase of one of them is zero.

Additional information:

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