Re: Dyson Sphere (shell) - Dysonica Anyone?
Too close.
Actually, it's all very dependent on the mass (& radius) of the star, but we can use our sun as an example.
The force of gravity depends on a few things: your mass, the mass of the body you are standing on, and the distance from the center of the star. The farther you are from the center of the star, the weaker the pull between the star and your body. The force gets weaker quite rapidly. If you double your distance from the star, the force is one-fourth. If you triple your separation, the force drops by one-ninth. Ten times the distance, one-hundredth the force. See the pattern? The force drops off with the square of the distance.
In order for our sun to exert approximately 1G, you would need to be 3,614,000 KM from the center, or 2,919,000 KM from the surface. To put this into some type of perspective, Mercury is 69,800,000 KM from the sun, so 2.9 Million KM is really, really, really, close.
Now, what wasn't worked into this is the gravitational pull of the Dyson Sphere itself, which will be substantial as it's mass is going to quite high (although due to the rather low radius to mass ratio it will be much lower than you'd expect for such as mass as gravitational pull is based in part on your distance from the center of mass).
So, how much mass is your sphere going to have?