Gravity and m of an object question?

First off it is nice to see some fun thinking. But you need to be aware of your umptions. Here is what I see, first you ume that the Gravity is modified by the location on earth and the speed of the spinning of the planet. Well it is a little but not to the extent that you may think. I pretty much have the same weight everywhere on the planet if I can keep my m constant that is I don't loss a bunch of weight in Mexico because I drank the water. Now I didn't verify your speed calculation but I will share with you something that I calculated and it is called the escape velocity. You should go read about it you may find it interesting. Just to a search I am sure you will find something. So I came up with 25200 miles per hours would be needed for someone or something to fly off the earth like your example of the ant on the ball. So the earth is going to have to get moving a lot faster then it currently is going. If you look at your ball and ant example... would the ant be flung off the ball if you slowed the revolution of the ball to only one turn per day? Now gravity is calculated or can be calculated with a formula that contains the Uninversal Gravitational Constant, Another nice thing to read about. But the importance is that force between two bodies, lets say your body and the earth is porpotional to the distance that you are from each others center of gravity and the respected mes of the two bodies. Thus you are always going to be about 3960 miles from the center of earth no matter where you are on the surface. So your force of attraction to the earth will tend to be the same everywhere you go, this force of attraction is called Gravity. So for me I have about 200 pounds of force and my pet dog only have 55 pounds and my cats is only 7 pounds, but we would all have to get up to a speed of about 25200 miles per hours if we wanted to escape the pull of gravity. It isn't really escaping it as much as balancing it. If I can go fast enough I will move fast enough to slowly move away from the planets surface if I move too slow I will just fall back to the surface and be stuck here. Now to your original thought you will have a very very very small difference in your weight while you are moving at a higher velocity at the equator but it will be about the same impact that you feel with a mosquito lands on your back. Not very much. Good luck and keep thinking