Recent content by pirsquared

Is the above assuming that you are always turning the tube from one point on the outside of the cylinder similar as to if you were turning a steering wheel as in this case the larger diameter is an advantage. What happens in the case where the driving force is at the center of the cylinder (lets...

Well there's more surface area in contact with the surrounding ground so I was wondering if the additional force required to rotate the pipe is proportional?

Hi, I have a question I'd like some help with which is related to my job working with drill rigs. Where you have a cylinder such as a drill string where the forces of the ground pressing in from all sides how much influence does the surface area have on the rotational force required to...