Before we get into answering your question, we
need to define weight and mass.
The mass of an object is the quantity of
matter it possesses. The important thing to
remember about mass is that it is constant, and
therefore if you are on Earth, the Moon, Mars, or
anywhere, your mass is always going to be the
Weight is defined as the product of a body's
mass and the gravitational acceleration in which
the mass is located. (Weight = Mass x Gravity)
What this means is that your weight depends on
both your mass (which doesn't change) and the
gravitation force of the place you are located.
A place with less gravity would cause an object
to have less weight. The moon is much smaller than the earth. So on the moon, where there is less gravity, you would weigh less than you do on Earth where there is more gravity.
The force of gravity on the moon is only about
one sixth as strong as gravity on Earth.
Gravity is what holds us down on the earth's
(or moon's) surface. If you were to weigh
yourself on a scale on Earth and then on the moon,
the weight read on the moon would be 1/6 your
earth weight. To figure out how much YOU would
weigh on the moon, take your weight and divide it
So, if you weighed 100 pounds on Earth, you
would weigh only about 16 pounds on the moon. If
you weigh 60 pounds on Earth, on the moon you will
weigh about 10 pounds. If you weigh 120 pounds on
Earth, you will weigh about 20 pounds on the moon.
Since weight is caused by the mass of two
objects that are near each other, the bigger the
objects, the more the force of gravity. If you
weigh 100 pounds on the Earth, you would weigh
more on a larger planet... like Jupiter where you
would weigh about 236 pounds.
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