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CBSE Class 11-science Answered

A planet revolves around a massive star in a highly elliptical orbit. Is its angular momentum constant over the entire orbit?
Asked by Topperlearning User | 12 Aug, 2014, 10:41: AM
answered-by-expert Expert Answer

Yes, angular momentum of the planet is constant over the entire orbit. This is because revolution of planet around the star is under the effect of gravitational force between the star and the planet. This is a radial force whose torque is zero. Therefore, angular momentum of the planet is a constant (vector), whatever is the nature of the orbit.

Answered by | 12 Aug, 2014, 12:41: PM

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