Oliver Lamb
Investigation into the affect of radius length
On the speed and time period of one orbit
There are many things that will affect the out come in this experiment, the mass of the object in orbit, the length of the radius, gravity mulling it down to the centre of the earth, friction on the string in the rotation axis. I am going to look at how the radius affects the speed of one orbit.
I predict that as the radius increases the time taken for one orbit will also increase.
In fact if the radius doubles the time also taken for one orbit will also double. If we draw an arc of a circle with its centre of rotation at the apex of the angle θ, then the length of the arc (s, or 2s or 3s) is proportional to the length of the radius (r, or 2r, or 3r), so long as the arch always subtends the same angel θ.