A. Starting from the assumption that angular momentum is conserved, prove Kepler's second law, the constancy...

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Physics

A. Starting from the assumption that angular momentum isconserved, prove Kepler's second law, the constancy of arealvelocity.

B. Starting from Kepler's first and second laws and Newton'sUniversal Law of Gravity, prove Kepler's third law (The HarmonicLaw).

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Keplers second lawA line joining a planet and the Sun sweeps out equal areasduring equal intervals of timeProofIn a small time the planet sweeps out a small triangle ormore precisely a sector having base line and height and area and so the constant areal velocity is The planet moves faster when it is closer tothe SunThe area enclosed by the elliptical orbit    See Answer
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