- #1
jbrightmatter
- 2
- 0
So I am building this program for fun. I thought I would combine some different elements of basic physics into it. I am letting people place in numbers to create a custom planet (radius, gravitational acceleration, rotation speed (tangential velocity?).
Anyway, I ran into an issue. I want them to enter a weight in kg and get back their actual mass. As I started doing the numbers, I noticed there was a force trying to remove masses from the surface of the planet due to revolution of the sphere. This means that if the stand on a scale it is giving their weight - a little bit because of this force (normal maybe?).
CLEARLY I barely passed my Kinematic physics in college. Can someone give me a formula to use when i am given a perceived weight, a radius of a sphere, the gravitational acceleration of that sphere, and the speed of rotation? Is it even possible to get an estimated true weight from those numbers?
Let me break it down. You stand on a scale at home and it says 100 kg. The Earth stops spinning and you reweigh yourself. What is the new weight and how do you come by that number? ...and yes, I am aware that is the Earth instantly came to a halt there would be some catastrophic repercussions but that is completely irrelevant to my question
Anyway, I ran into an issue. I want them to enter a weight in kg and get back their actual mass. As I started doing the numbers, I noticed there was a force trying to remove masses from the surface of the planet due to revolution of the sphere. This means that if the stand on a scale it is giving their weight - a little bit because of this force (normal maybe?).
CLEARLY I barely passed my Kinematic physics in college. Can someone give me a formula to use when i am given a perceived weight, a radius of a sphere, the gravitational acceleration of that sphere, and the speed of rotation? Is it even possible to get an estimated true weight from those numbers?
Let me break it down. You stand on a scale at home and it says 100 kg. The Earth stops spinning and you reweigh yourself. What is the new weight and how do you come by that number? ...and yes, I am aware that is the Earth instantly came to a halt there would be some catastrophic repercussions but that is completely irrelevant to my question