Calculate the acceleration due to gravity at Earth due to the Moon. (b) Calculate the acceleration due to gravity at Earth due to the Sun.

a)  g’= 3.44 10⁻⁵ m / s²

b)  g ‘’ = 5.934 10⁻³ m / s²

Explanation:

For this exercise let's use the law of universal gravitation

         F =

where m is the mass of the body under study, M the mass of the body that creates the force and r the distance between the bodies

         F =

the attractive force is called weight W = m g,

Thus

         g =

is called the acceleration of gravity

a) the acceleration created by the moon

       g' = G \frac{M}{r^2}

the mass of the moon is M = 7.36 10²² kg

the distance from the moon to the Earth's surface is

       r = D -R_e

       r = 3.84 10⁸ -6.37 10⁶

       r = 3.7763 10⁸ m

we calculate

     g’=

     g ’= 3.44 10⁻⁵ m / s²

b) the acceleration created by the sun

mass of the sun M = 1,9991 10³⁰ ka

the distance from the sun wears down the Earth's surface

        r = D -R_e

        r = 1.496 10¹¹ -6.37 10⁶

        r = 1.4959 10¹¹ m

let's calculate

       g ’’ =

       g ‘’ = 5.934 10⁻³ m / s²

fgravity=10x10=100n case 1

fgravity=30x20=600n case 2

6 times more

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