How much does the moon weigh?

Question

How much does the moon weigh?

Answer 1

nuts, i know there's a formula to determine it, based on a ratio of orbital period and diameter...

If it helps, the earth is 5.98 X 10(exp 24) kg.

I think.  It's been awhile.

Answer 2

Weight? In space? Hahahahahaha...

Answer 3

7.35x1022 but the MASS of the moon varies depending on different situations.

Answer 4

it doesn't weigh anything. it floats in space.  if you want to know the MASS then it is somewhere around 74 quitillion tons about 1/81 the mass of Earth.

Answer 5

Hmmm, let's see.

It's 2,000 miles in diameter. That's 3200000 meters.

The volume of a sphere is 4/3 Pi r^3, or, hold on, lemme get my calculator...

1.7 x 10^19 cubic meters.

Let's say the average density is two metric tons per cubic meter. That would be:

3.4 x 10^19 tons.

That's my guess.

EDIT:

According to Wikipedia, it's 7.3 x 10^22 kg, or 7.3 x 10^19 tons. So I was off by a factor of two. Shows how much I know.

Answer 6

zero. it's in freefall.

Answer 7

1000000000000000000000000000000000000 LBS

Answer 8

alot.

Answer 9

This question was posted 2 years ago and here was the best answer:

81 billion tons

here is a site that explains how this number comes about

http://www.newton.dep.anl.gov/askasci/as...

Answer 10

idk lemme see.

i'll be right back!

Answer 11

the moon is not real

Answer 12

It's probably impossible to know.

Answer 13

Nothing.  Orbiting objects don't weigh anything--remember?

Answer 14

In the US (US-Units) weight is counted as a force.

You have length (ft), weight (lb), and time (s). So you derive mass from it. mass=weight/g

Everywhere else we count in SI-Units (Système International d'unités) and weight is counted as mass.

We have length (m), mass (kg), and time (s). We derive weight from their mass. weight=mass g

I really hope you'll change that soon and get with the rest of the world. How you can measure in ft, inches, Fahrenheit, lb, gallons, oz and whatnot is beyond me.

anyways the moon has a mass of 7,349 × 10^22 kg

Answer 15

Nothing.

The moon has "mass."  It does not have "weight."

Classic misuse of the terms.

Answer 16

The MASS of the moon is 7.36 × 10^22 kilograms, but since you said weight you made my job a lot harder.

The equation for weight (force due to gravity) is

Force = G*(Mass1)*(Mass2)/(Distance)^2

G being the universe's gravitational constant 6.67x10^-11 m^3 / kg*s^2

So

Mass1=Earth=5.9742 × 10^24 kilograms

Mass2=Moon=7.36 × 10^22 kilograms

Distance=distance from core to core=3.84x10^8 meters

(6.67x10^-11) * (5.9742×10^24) * (7.36×10^22) / (3.84x10^8)^2 = 2.0x10^20

Thats in Newtons which in pounds is 8.8x10^20 lbs

In tons its 4.4x10^17

The acceleration due to gravity is weaker but it does exist otherwise the moon would go flying off into space.

Tried to be thorough. Hope this helps =)