Assume that planet A has radius RA and mass MA, and planet B has radius Rg and mass Mg. Let ga and gg are the accelerations due to gravity at their surfaces, respectively. If MA = Mg, and RA = 2Rg The ratio (ga/ge) is: B• %3D А. 1 В. 2 С. 4 D. 0.5 E. 0.25

Assume that planet A has radius RA and mass MA, and planet B has radius Rg and mass Mg. Let ga and gg are the accelerations due to gravity at their surfaces, respectively. If MA = Mg, and RA = 2Rg The ratio (ga/ge) is: B• %3D А. 1 В. 2 С. 4 D. 0.5 E. 0.25

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter13: Gravitation

Section: Chapter Questions

Problem 24P: On a planet whose radius is 1.2107m , the acceleration due to gravity is 18m/s2 . What is the mass...

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Central Force

Central force is the force that acts along the center of mass of one body to the center of mass of another body. Its direction from or away from a point on a body to another is called the center of the force. Such forces include gravitational force between two massive objects or electrostatic forces between two charged particles. So from atoms to planets, the central forces play an important role in shaping our daily lives. One of the remarkable features of central forces is that they are conservative, i.e. the total energy of a central force system can always be expressed as a gradient of a potential energy function.

Question

Assume that planet A has radius RA and mass MA, and
planet B has radius Rg and mass Mg. Let gA and gg are the
accelerations due to gravity at their surfaces, respectively.
If MA = MB, and RA = 2Rg
The ratio (ga/g8) is:
%3D
А. 1
В. 2
С. 4
D. 0.5
E. 0.25

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