Hi, Question about fictitious force, The set-up is a torus rotating in space of radius r. First part involves working out the speed of rotation v, for which an artificial gravity of 1g will be created in the torus. Which is just the centripetal acceleration (centrifugal force?) For r = 100m at g = 9.81ms-2, v = 31.3 ms-1 (to 3.s.f), w = 0.313 revs s-1. Acting radially outwards. Next part I'm not sure, we were asked if someone was moving along the corridor (still gravity = g, r = 100m ) at a speed of V = 1ms-1 (in either direction). What will be the magnitude and direction of the acceleration the walker experiences. I think it's the corolis force, a = 2(V X w) (cross-product), but I'm unsure of the angle between the axis of rotation and the direction the person is walking in. Any help would be appreciated.