Asked by Anonymous
A fan with a diameter of 10cm is spinning at 25 revolutions per minute clockwise. The fan's reference blade starts pointing directly upwards. Determine an equation for a sinusoidal function that represents the fan's reference blade's vertical distance from the center (a negative value being accepted). State the period, amplitude and vertical shift for this function.
Answers
Answered by
Anonymous
I need help please. I have to finish this question.
Answered by
Steve
since the curve starts at the top when t=0,
y = a cos(kt)
the diameter is 10, so the radius is 5:
y = 5 cos(kt)
The period is 1/25 min, so 2pi/k = 1/25, making k = 2pi/25
y = 5 cos(2pi/25 t)
Not sure what you mean by <u>the blade's</u> distance from the center. I think you meant the tip of the blade.
y = a cos(kt)
the diameter is 10, so the radius is 5:
y = 5 cos(kt)
The period is 1/25 min, so 2pi/k = 1/25, making k = 2pi/25
y = 5 cos(2pi/25 t)
Not sure what you mean by <u>the blade's</u> distance from the center. I think you meant the tip of the blade.
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