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FGD
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If an accelerometer is rotating as it moves forward through the air, what force is acting on the accelerometer? Say we remove gravity and just concentrate on the horizontal axis.
I know there is centripetal and tangential acceleration that shows up as an offset in the sin wave, but what causes the sinusoidal pattern?
For example if the accelrometer was in place and rotating at a constant speed, all you would see is the centripetal force as an offset. Tangential acceleration would be non existent since the speed is constant.
As soon as it moves forward though, you see a sinusoidal pattern emerge.
The only thing I can think of is velocity of the accelerometer is somehow effecting the readings as it spins. Is this what is happening?
If so, is there math/physics to back this up? Like could you reverse engineer the values to get the velocity?
Say:
we remove the offset so that the centripetal acceleration is not a factor.
ω = ~70 rad/s
period = ~0.09 seconds
amplitude = ~20 m/s^2
we’ll just say phase is 0 to make things simpler.
What would be the math to figure this out? Any help would be very appreciated.
I’ve attached an image of the 2d plane if that helps. There is no acceleration when the accelerometer is 90 degrees to the velocity direction. And negative values from 90 to 270 degrees.
I know there is centripetal and tangential acceleration that shows up as an offset in the sin wave, but what causes the sinusoidal pattern?
For example if the accelrometer was in place and rotating at a constant speed, all you would see is the centripetal force as an offset. Tangential acceleration would be non existent since the speed is constant.
As soon as it moves forward though, you see a sinusoidal pattern emerge.
The only thing I can think of is velocity of the accelerometer is somehow effecting the readings as it spins. Is this what is happening?
If so, is there math/physics to back this up? Like could you reverse engineer the values to get the velocity?
Say:
we remove the offset so that the centripetal acceleration is not a factor.
ω = ~70 rad/s
period = ~0.09 seconds
amplitude = ~20 m/s^2
we’ll just say phase is 0 to make things simpler.
What would be the math to figure this out? Any help would be very appreciated.
I’ve attached an image of the 2d plane if that helps. There is no acceleration when the accelerometer is 90 degrees to the velocity direction. And negative values from 90 to 270 degrees.
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