Elliptical Motion: Formulating Object Motion & Finding Theta

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SUMMARY

The discussion focuses on formulating the elliptical motion of an object as perceived by an observer when the object moves linearly. Key variables include the object's velocity (v), the perpendicular distance from the observer (x), and the angle theta (θ) representing the position angle relative to a reference axis. The conversation emphasizes deriving the rate of change of theta and establishing the general equation for an observer positioned at angle θ_o, assuming the observer is at a significant distance from the motion path.

PREREQUISITES
  • Understanding of elliptical motion dynamics
  • Familiarity with position vectors and angular measurements
  • Basic knowledge of calculus for rate of change
  • Concept of reference frames in physics
NEXT STEPS
  • Explore the mathematical formulation of elliptical motion equations
  • Study the concept of angular velocity in relation to linear motion
  • Investigate the effects of observer distance on perceived motion
  • Learn about coordinate transformations in physics
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Physicists, mathematicians, and students studying motion dynamics, particularly those interested in the relationship between linear and elliptical motion from an observational perspective.

vaishakh
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How can we formulate the elliptical motion of an object apparently observed by us when it moves linearly infront of us. The position vector with respect to us makes an elliptical motion at that time. To start with let's take the velocity as v, the perpendicular distance of the line of motion from observer as x and now find the rate of change of theta with respect to us.
 
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One could right the equation of motion for an ellipse, and then determine the lateral component as a function of time with respect to the line of the observer. Assume that the observer is far way. If [itex]\theta[/itex] is the position angle with respect of the object from some reference, say the major axis, then one could write the general equation for an observer at [itex]\theta_o[/itex]
 

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