How to Calculate Your Weight on the Moon

How to Calculate Your Weight on the Moon
••• tetmc/iStock/GettyImages

Your weight is a measure of the amount of gravity exerted on your body by the planet Earth. If you travel to a different planet or celestial body, such as the moon, your weight changes if the gravity is different. Because the moon has about one-sixth of the gravity that Earth does, you'd weigh less standing on it.

Comparing Objects' Gravity

Gravity is based on an object's mass and your distance from the center. When you're on the surface of a planet, you can use the planet's radius to calculate your distance from the center.

If you compare the mass of the moon to the earth's, you will find that the moon's mass is 0.0123 of the earth. The moon's radius is 0.273 of the Earth's. To see what the moon's gravity is compared to the earth, divide the ratio of the masses by the ratio of the radii squared.

x=\frac{\text{ratio of masses}}{\text{ratio of radii}^2}=\frac{0.0123}{0.273^2}=\frac{0.0123}{0.074529}=0.165

Calculating Your Weight on the Moon

    Write down your weight in pounds or kilograms. For example, suppose that you weigh 135 pounds.

    Multiply your weight by the moon's gravity relative to earth's, which is 0.165.

    Solve the equation. In the example, you would obtain the product 22.28 lbs. So a person weighing 135 pounds on Earth would weigh just over 22 pounds on the moon. Remember, however that your mass has not changed.

Related Articles

How to Explain Gravity to a Child
How to Make a 3D Model of the Sun, Earth & Moon
How Much Time Is One Day on Mars?
How to Compare Earth to Neptune
Gravitational Factors of Our Eight Planets
School Projects of Jupiter
How to Solve Gravitational Force Problems
Throwing a Rock on the Moon
How to Calculate a Planet's Revolution Around the Sun
Facts About Neptune for a School Project
Movements of the Sun, Moon & Earth
What Are the Elements of Uranus?
Which Planet Moves the Slowest Along Its Orbital Path?
In Ancient Greece What Shape Was the Earth Believed...
How to Make a Model of Mars for 5th Grade
The Similarities and Differences Between the Sun and...
How to Measure the Density of a Planet
How to Make a 6th Grade Solar System Model Project
How to Make a Paper Plate Mars