From a wiki's vis-viva equation page, it is given that the specific angular momentum h is also equal to the following:(adsbygoogle = window.adsbygoogle || []).push({});

h = wr^2 = ab * n

How can ab * n be derived to be equal to the angular momentum using elliptical orbit energy/momentum/other equations without having to use calculus or equations involving eccentricity?

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# I Why is the specific angular momentum equal to this?

Have something to add?

**Physics Forums | Science Articles, Homework Help, Discussion**