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Charra [1.4K]
3 years ago
14

At the surface of the moon, the acceleration due to the gravity of the moon is x. At a distance from the center of the moon equa

l to four times the radius of the moon, the acceleration due to the gravity of the moon is _____.
Physics
1 answer:
krok68 [10]3 years ago
7 0

Answer:

Gravity at a distance of 4R will be reduced to 1/16 th.

Explanation:

Given:

At the surface of the moon, the acceleration due to the gravity of the moon is x.

We have to find the gravity a t a distance of 4 times from the center of the moon.

Let the radius of the moon be "R".

And

The value of acceleration due to gravity is g_m .

Formula:

⇒ g_m=\frac{GM}{R^2}   ...where M is the mass of the moon.

Now

Gravity of the moon at the its surface:

⇒ g_m=\frac{GM}{R^2}    ...equation (i)

Gravity of the moon at a distance of  4R:

⇒ g_m_1=\frac{GM}{(4R)^2}

⇒ g_m_1=\frac{GM}{16R^2}   ...equation (ii)

Dividing equation (i) with (ii) to find the relationship between the two.

⇒ \frac{g_m_1}{g_m} =\frac{GM}{16R^2}\times \frac{R^2}{GM}

⇒ \frac{g_m_1}{g_m} =\frac{1}{16}

⇒ g_m_1 =g_m(\frac{1}{16})

⇒ g_m_1 =x(\frac{1}{16})    ...as gm=x at the surface.

So,

We can say that the gravity at a distance of 4R will be reduced to 1/16 th.

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