Recent content by geno921

But in this spiral path the velocity is not perpendicular to the force. If it were there would not be a spiral path. It is close, but it is not exactly perpendicular and the deviation depends on the magnitude of the centripetal force compared to the current radius of the "orbit?"

Sandy_patch, you hit on my idea. I know the work done is 0 in the initial case and the final case taken separately. However, does this imply that the work done in the event of increasing the (centripetal) force, which decreases the radius of orbit, is 0, or is it that since the kinetic energy...

Hi, I remember reading that no work is done on an object in a circular orbit experiencing a centripetal force. However, what if that object experiences an external centripetal force greater than that which keeps its orbit in a radius r. That would cause the object to orbit with a smaller...

I believe your angle is wrong. Check the derivate of r1'(1)= <1,-1,2t>, thus giving a vector of <1,-1,2> not <1,-1,1>. The angle comes out to pi/6.