Assume that planet A has radius RA and mass MAplanet B has radius Rg and mass Mg. Let gA and g; are theaccelerations due to gravity at their surfaces, respectively.If MA = Mg, and RA = 2RgThe ratio (ga/gB) is:and!!%3DА. 1В. 2C. 4D. 0.5E. 0.25

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

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter7: Gravitation

Section: Chapter Questions

Problem 78A

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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
planet B has radius Rg and mass Mg. Let gA and g; are the
accelerations due to gravity at their surfaces, respectively.
If MA = Mg, and RA = 2Rg
The ratio (ga/gB) is:
and
!!
%3D
А. 1
В. 2
C. 4
D. 0.5
E. 0.25

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