A support beam used in one of the designs for the theme park, is subjected to vibrations along its length; emanating from two machines situated at opposite ends of the beam. The displacement caused by the vibrations can be modelled by the following equations: x_1=3.75 sin(100πt+2π/9) x_2=4.42 sin(100πt-2π/5) You are required to determine the followings for the vibration of this beam: i. State the amplitude, phase angle, frequency and periodic time of each of these waves. ii. When both machines are switched on, how many seconds does it take for each machine to produce its maximum displacement? iii. At what time does each vibration first reach a displacement of −2??? iv. Use the compound angle formulae to expand x_1 and x_2 into the form ? sin 100?? ± ? cos 100??, where ? and ? are numbers to be found. v. Using your answers from part iv, express x_1+x_2 in a similar form. Convert this expression into the equivalent form ? sin (100?? + α)
A support beam used in one of the designs for the theme park, is subjected to vibrations along its length; emanating from two machines situated at opposite ends of the beam. The displacement caused by the vibrations can be modelled by the following equations:
x_1=3.75 sin(100πt+2π/9)
x_2=4.42 sin(100πt-2π/5)
You are required to determine the followings for the vibration of this beam:
i. State the amplitude, phase angle, frequency and periodic time of each of these waves.
ii. When both machines are switched on, how many seconds does it take for each machine to produce its maximum displacement?
iii. At what time does each vibration first reach a displacement of −2???
iv. Use the compound angle formulae to expand x_1 and x_2 into the form
? sin 100?? ± ? cos 100??, where ? and ? are numbers to be found.
v. Using your answers from part iv, express x_1+x_2 in a similar form. Convert this expression into the equivalent form ? sin (100?? + α)
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for Part V) should the answer not be -0.4 to the final part of the question since the number put into the equasion is -1.79