Rishitha S.

asked • 04/02/18

The change in the value of acceleration of earth towards sun,when the moon comes from the position on the other side of earth in line with sun is:

(mass of moon=7.36*10 power 22 kg
radius of moon's orbit=3.8*10 power 8)
options are a.6.73*10 power -3 m/s square
b.6.73*10 power -5 m/s square

1 Expert Answer

By:

Arturo O. answered • 04/02/18

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Rishitha S.

Actually I didnot understand the question itself.Can u pls explain me the question!!
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04/03/18

Arturo O.

This is a Newton's 2nd law situation.
 
F = ma
 
a = F/m
 
There are 2 forces, the gravitational attraction of the sun pulling the earth one way, and the gravitational attraction of the moon pulling the other way.  The net acceleration is the difference of the forces divided by the mass of the earth.  Both forces obey Newton's law of gravitation:
 
F12 = Gm1m2/r122
 
One of these masses is the mass of the earth.  Divide it out from the sun-earth force and moon-earth force equations to get accelerations, and take the difference, which gives you the equation in my answer.
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04/03/18

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