SilentSky23

No need to say sorry. I say I need to say that for not articulating the question well enough in the first place.

I will try next time. And no.

That should do, and if it didn’t, close enough. Thanks.

Sorry. I forgot to use center of gravity, and I did not understand how complex this was. For examples, what about a gymnast doing, well, a back flip or another gymnastics routine if that counts? That was mainly what I was going for, anyway. Also, forget center of gravity. Let's use center of mass for the question I was asking, instead.

What I was after was if anything rotation based in physics, like moment of inertia and such, is connected to center of gravity, to the point that anything rotation based changes when the center of mass changes. Like if the center of gravity is outside the body, mainly a non-rigid body, does anything like moment of inertia change as in become easier or harder. Why would it be hard to understand?

My bad, I should have known that not all rotations act through the center of mass, something I learned by looking up before you made this post. I should have thought this more carefully before I made this topic. Maybe I was not talking about axis of rotation, but maybe moment of inertia? If moment of inertia has anything to do with center of gravity, does moment of inertia change when the center of gravity changes? Either way, I am interested in the part of your post I bolded. Can you please tell me more, if you can?

Isn't the external force just the cause of rotation, though? Rather than the line acting through a point in the body? I thought those were two different things. The line part was what I meant by axis of rotation.

Yeah, I wasn't really talking about external forces here.

I only said the through the center of gravity part because I kept reading that online and in books. At least for the human body int he pelvic area. Maybe I phrased it wrong, and meant intersect at the center of gravity? If that means anything? Or is the line through the center of gravity?

Now, if I am not mistaken, from what I know, the axis of rotation of a body usually goes through the center of gravity of a body. Also, the position of the center of gravity, if I recall correctly, does change when the position of the body of the living being or object in question changes. Well, just to make sure, I must ask: would the location of the axis of rotation change if the position of the center of gravity changes as well?

To be honest, being told which would stop first; that is actually all I need.

So, are you expecting numbers? I am kinda having trouble understanding what you want from me when talking about this situation. If surface level and air resistance and such aren't going to be enough here as it may seem, tell me, what should I tell you, especially for next time when I do ask something like this, just to be safe?

I did say the type of surface, which is wooden. Not to mention smooth. As for the other things, say the air resistance is normal, or the usual amount in everyday life (nothing too strong) with no wind, and the level of the surface is, well, flat. Anything else you need to know?

Well, what I meant in my initial saying was that I believe lighter objects accelerate faster and go farther than the ones with more mass, under the same exerted force, of course. Now, for a light object and a heavy object going at the same acceleration, under different forces acting on each of them; assuming the forces are both different in magnitude but acting in the same amount of time; with resisting forces like friction being the same on both objects in terms of magnitude, but acting for a longer time than the two forces that accelerated the objects in the first place, which one would come to a stop sooner than the other if one has the higher inertia than the other? How is this? EDIT: For the surface, say the surface is a wooden floor in a house.

Yeah, I know, I was going to edit that part about acceleration, but I see I can't now. Still, say that the lighter object is exerted for less than a second, and the second object has a bigger force around the same amount of time. For the negative acceleration from the resistance that eventually stops them, I am not sure. Would the times of negative acceleration be different for each of them?