# An astronaut lands on a moon that has one-twentieth the mass of Earth and two-fifths the radius....

## Question:

An astronaut lands on a moon that has one-twentieth the mass of Earth and two-fifths the radius. Find the weight of the astronaut standing on the moon in terms of his Earth weight {eq}w_E. {/eq}

{eq}w_x= {/eq} _____

## Gravity Effect

The gravity is called the acceleration due to the gravitation pull of the Earth or any other planet on which the objects are present (falling or just laid on the surface).

## Answer and Explanation:

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The mathematical equation to determine the gravity of any planet is given as,

{eq}g = G \dfrac{M_{planet}}{R^2_{planet}} {/eq}

where,

{eq}M_{plane...

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#### Learn more about this topic:

Gravitational Pull of the Earth: Definition & Overview

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Chapter 15 / Lesson 17
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Earth's gravitational pull is often misunderstood, but without it, life on Earth would be impossible. In this lesson, we'll define the gravitational pull and give some examples of how it is used. A quiz is provided to test your understanding.