at an apse the particle moves at right angle to the radius vector I. e at an apse the radius vector is perpendicular to the tangent
Answers
Answer:
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Answer:
Proved.
Step-by-step explanation:
To Prove:- At an apse the particle moves at right angle to the radius
vector i.e. at an apse the radius vector is perpendicular to the
tangent.
Proof:-
From the definition of an apse, the apsidal distance r is maximum or minimum.
∴ is also minimum or maximum at an apse.
⇒
For any curve, we have
where p is the length of the perpendicular from the origin to the tangent at any point to the curve.
∴ [∵ ]
⇒ [∵ ]
⇒
⇒
⇒ r sin Ф = r
⇒ sin Ф = 1
⇒ Ф = 90°
Thus at an apse the particle moves at right angles to the radius vector i.e. at an apse the radius vector is perpendicular to the tangent.
Hence, proved.
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