How lot Does the Moon Weigh?
It weighs around zero pounds.
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Okay, that’s most likely not the answer you were expecting. Permit us to explain.
When you stand on a scale and also weigh yourself (in pounds), you actually taking a measure of force. Specifically, the pressure your human body is exerting downwards on the scale, due to Earth’s acceleration of gravity. If girlfriend remember Newton, pressure is same to one object’s mass multiply by that is acceleration (F=ma). The typical unit for mass is kilograms, i beg your pardon is also how civilization weigh points basically anywhere that no America.
So load is the force something exerts on an additional thing due to gravity (like you exert on Earth). If you’re right now taking a physics class, periodically you’ll check out it arranged as the pressure something exerts earlier on another thing because of gravity. Yet that’s far less intuitive in ours opinion, so fine be mentioning weight in regards to the former.
For every intents and also purposes, the Moon is not increasing towards the earth (actually, it type of is, however we’ll acquire to that). So, in the F=ma equation, F = 0 since a = 0. Since weight is a measure of force, weight = 0.
What Is the Moon’s Mass?
Because the Moon’s acceleration is 0, the value of the mass becomes irrelevant as soon as calculating the weight loved one to Earth. But, you could be wondering just how much mass the Moon has? it is a well-known value. It’s around 7.35 * 10^22 kilograms.
That’s 73,500,000,000,000,000,000,000 kilograms. To put that into perspective, a blue whale is around 200 tons. That comes the end to 181,437 kilograms. This means that around 405,000,000,000,000,000 blue whales same the mass of the Moon. Suffice come say the Moon is heavy. Yet the Moon is only 1.2% the the earth’s mass (roughly 6*10^24 kg), so the Moon is in reality super light in the cosmic plan of everything.
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Why does the Moon have Zero Acceleration?
We’ve already established the the Moon isn’t accelerating towards Earth, i m sorry is true to a degree. The reason why the Moon isn’t at this time on a crash food towards planet is since of that is orbit.
It’s known that the Moon orbits around the Earth. We’ve placed together a streamlined diagram of just how orbits work below. In summary, the Moon is accelerating towards the Earth, however it also has forward momentum perpendicular come its acceleration in the direction of the Earth.
Because these two vectors are approximately equal, the Moon end up moving in the circular route outlined on the very same diagram.
Since one vector is momentum and also the other is acceleration, the Moon will eventually (over the food of a very long time) stop orbiting the Earth. At some point its momentum may decay until Earth’s heaviness is much greater, in which instance the Moon will certainly collide v the Earth. Together it stands though, the Moon is actually gradually drifting far from Earth. Some theorize the instead, the Moon is in reality destined to leave Earth’s gravity and drift off into space.
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Of course, before any of this happens, the sunlight will go into its red large phase. Together it starts to expand around 5 billion year from now, it will certainly swallow increase the terrestrial planets. And the Moon will have the exact same unfortunate fate together Earth. So we’ve obtained that going because that us. I beg your pardon is nice.