Does rotational motion affect the translational motion?

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Rotational motion affects translational motion by introducing a Coriolis-like force in the body frame of a flying object, represented as ω×ν, where ω is the rotational velocity and ν is the translational velocity. In the inertial frame, which is fixed to the ground, this effect does not manifest as an equivalent force since inertial forces are exclusive to non-inertial frames. The body frame experiences no translational velocity relative to itself, leading to the absence of Coriolis forces in the inertial frame. Therefore, the transformation from the body frame to the inertial frame does not reveal any equivalent force of ω×ν. Understanding this distinction is crucial for analyzing motion in different reference frames.
Avijit
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A flying object is moving in 3D space having translational velocity and the object is also rotating. Consider a body frame (xb-yb-zb) attached to the C.G of the moving body. Hence the body attached frame is also translating and rotating (as the object is flying) with respect to a fixed inertial frame. The inertial frame(X-Y-Z) is attached and fixed at some specific location on ground(earth). Due to the effect of both translation and rotation a Coriolis kind of force (rotational velocity cross translational velocity) ω×ν will exist in body attached frame (xb-yb-zb). Here ω: Rotational velocity of the flying object, v: velocity of the object represented in body attached frame (xb-yb-zb).

I would like to know :
Does any equivalent force of ω×ν will exist in the inertial frame? In other words, using the frame transformation (from body attached frame to inertial frame) can we realize the ω×ν effect in inertial frame?
 
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In your described scenario, every point in the body is at rest with respect to the rotating coordinates, so there's no Coriolis force. Remember the rotating reference frame is attached to the center of mass of the object, so there's no translational velocity in that frame.
 
upload_2016-12-15_7-41-16.png
here is the equation in body fixed frame
where U V W are velocity component of moving body represented in body frame. P Q R are body rotation rates in respective direction
 
Last edited:
Avijit said:
Does any equivalent force of ω×ν will exist in the inertial frame?
No, inertial forces exist only in non-inertial frames.
 
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