Question

 The comet Encke has an aphelion distance of equation and perihelion distance of equation. The mass of the sun is equation. Find the speed of the comet at the perihelion and the aphelion.

10 Feb 2026
Answer :
Word Count : 257
To find the speed of a comet at perihelion and aphelion, we use the law of conservation of angular momentum and vis-viva equation from elementary mechanics. Let the perihelion distance be ( r_p ) and aphelion distance ( r_a ), with the Sun’s mass ( M ). The comet’s velocity ( v ) at any point in its elliptical orbit can be calculated using
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