The Earth’s orbit around the Sun is slightly elliptical. At Earth's closest approach to the Sun (perihelion) the orbital radius is 1.471×1011m, and at its farthest distance (aphelion) the orbital radius is 1.521×1011m.Given that the mass of the Earth is 5.972×1024kg, and that of the Sun is 1.989×1030kg, find the difference in gravitational potential energy between when the Earth is at its aphelion and perihelion radii.If the orbital speed of the Earth is 29,290 m/s at aphelion, what is its orbital speed at perihelion?

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Answered: The Earth’s orbit around the Sun is…

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter7: Rotational Motion And The Law Of Gravity

Section7.5: Newtonian Gravitation

Problem 7.9QQ: A planet has two moons with identical mass. Moon 1 is in a circular orbit of radius r. Moon 2 is in...

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The Earth’s orbit around the Sun is slightly elliptical. At Earth's closest approach to the Sun (perihelion) the orbital radius is 1.471×10¹¹m, and at its farthest distance (aphelion) the orbital radius is 1.521×10¹¹m.

Given that the mass of the Earth is 5.972×10²⁴kg, and that of the Sun is 1.989×10³⁰kg, find the difference in gravitational potential energy between when the Earth is at its aphelion and perihelion radii.
If the orbital speed of the Earth is 29,290 m/s at aphelion, what is its orbital speed at perihelion?

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