usagirl007A
2021-01-31
diskusje5
Skilled2021-02-01Added 82 answers
Step 1
This may be able to help you get a head start on the issue.:
if the point on the most left side has the greatest upward deflection at time zero, it may most easily be modelled as a cosine function, of form
where A is the amplitude, 2.5mm (A=0.0025), B is the frequency of the function and C is the phase displacement.
Step 2
Using , you can find that the frequency of the wave is 20 Hz, that is, 20 complete cycles of the wave form in 1 second(B=20). The period is 0.05 sec (50 ms).
The phase shift is calculated by moving the curve forward or back sufficient to observe the point 1.35m from the left or right hand point. 1.35m is 0.75 times the wave length.
You can see from a quick sketch that this point is zero and has an upward slope. The sine wave without any phase displacement is what we are left with..
22+64
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