Task 4A support beam is subjected to vibrations along its length, emanating from two machinessituated at opposite ends of the beam. The displacement caused by the vibrations can bemodelled by the following equations,x1 = 3.75 sin ( 100nt +27mmx2 = 4.42 sin (100nt –)r2nmma. State the amplitude, phase, frequency and periodic time of each of these waves.b. When both machines are switched on, how many seconds does it take for each machineto produce its maximum displacement?c. At what time does each vibration first reach a displacement of - 2mm?d. Use the compound angle formulae to expand x1 and x2 into the form A sin 100nt ±B cos 100nt, where A and B are numbers to be found.

The expressions for displacement caused by vibrations from the two machines are…

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