A 100 pound person weighs differently on Mars due to the difference in gravity. Find out what a 100 pound person would weigh on Mars with help from an experienced chemistry professional in this free video clip.

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A 100 pound person weighs differently on Mars due to the difference in gravity. Find out what a 100 pound person would weigh on Mars with help from an experienced chemistry professional in this free video clip.

Part of the Video Series: Chemistry Lessons

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Hi, I'm Robin Higgins and this is how much would a 100 pound person weight on Mars. So we have to first realize that how much we weigh is really based on the amount of gravity we are experiencing. So if you have someone on Earth, pretty much the gravity on Earth is the same everywhere and it pushes down to a certain amount, creating your weight. So if you take the same person and move them to a place where gravity let's say is twice as much, then the amount that they are being pressed down on is twice as much as they are on Earth and so that means they are going to weigh twice as much. So to figure out how much someone on Mars would weigh if they weigh 100 pounds on Earth, we have to figure out how much gravity is on Mars compared to how much it is on Earth. So gravity on Earth is about 9.8 meters per second squared and meters per second squared is the units that we are always going to use for defining gravity and so on Mars, gravity is about 3.7 meters per second squared and that's a lot less. So we know that we are going to weigh a lot less on Mars than we do on Earth and so if you divide 3.7 by 9.8 you can figure out that gravity on Mars is about 38% of what it is on Earth. So that means that anyone on Mars is going to weight 38% of what they weigh on Earth. So if you weigh 100 pounds on Earth, you are going to weigh 38 pounds on Mars. And so I'm Robin Higgins and this has been how much would a 100 pound person weigh on Marsh.