%0 Journal Article %1 RefWorks:401 %A Shegelski, Mark R. %A Reid, Matthew %D 1999 %J Canadian Journal of Physics %K Curl Curling Curlingstein Reibung %N 11 %P 903-922 %T Comment on: Curling Rock Dynamics - The Motion of a Curling Rock: Inertial vs. Noninertial Reference Frames %V 77 %X We examine the approach used and the results presented in a recent publication (Can. J. Phys. 76, 295 (1998))in which (i) a noninertial reference frame is used to examine the motion ofa curling rock, and (ii) the lateral motion of a curling rock isattributed to left-right asymmetry in the force acting on the rock.We point out the important differences between describing the motionin an inertial frame as opposed to a noninertial frame.We show that a force exhibiting left-right asymmetryin an inertial frame cannot explain the lateral motion of a curlingrock. We also examine, as was apparently done in the recent publication,an effective force that has left-right asymmetry in a noninertial, rotating frame. We show that such a force is not left-right asymmetric in an inertial frame, and that anylateral motion of a curling rock attributed to the effective forcein the noninertial frame is actually due to a real force, in aninertial frame, which has a net nonzero component transverse to the velocityof the center of mass. We inquire as to the physical basis for thetransverse component of this real force. We also examine the motion ofa rotating cylinder sliding over a smooth surface for which there isno melting: we show that the motion is easily analyzed in an inertialframe and that there is little to be gained by considering a rotating frame.We relate the results for this simple case to the more involved problemof the motion of a curling rock: we find that the motion of curling rocksis best studied in inertial frames. Perhaps most importantly, we showthat the approach taken and the results presented in the recent publicationlead to predicted motions of curling rocks that are indisagreement with observed motions of real curling rocks.

@article{RefWorks:401, abstract = {We examine the approach used and the results presented in a recent publication (Can. J. Phys. 76, 295 (1998))in which (i) a noninertial reference frame is used to examine the motion ofa curling rock, and (ii) the lateral motion of a curling rock isattributed to left-right asymmetry in the force acting on the rock.We point out the important differences between describing the motionin an inertial frame as opposed to a noninertial frame.We show that a force exhibiting left-right asymmetryin an inertial frame cannot explain the lateral motion of a curlingrock. We also examine, as was apparently done in the recent publication,an effective force that has left-right asymmetry in a noninertial, rotating frame. We show that such a force is not left-right asymmetric in an inertial frame, and that anylateral motion of a curling rock attributed to the effective forcein the noninertial frame is actually due to a real force, in aninertial frame, which has a net nonzero component transverse to the velocityof the center of mass. We inquire as to the physical basis for thetransverse component of this real force. We also examine the motion ofa rotating cylinder sliding over a smooth surface for which there isno melting: we show that the motion is easily analyzed in an inertialframe and that there is little to be gained by considering a rotating frame.We relate the results for this simple case to the more involved problemof the motion of a curling rock: we find that the motion of curling rocksis best studied in inertial frames. Perhaps most importantly, we showthat the approach taken and the results presented in the recent publicationlead to predicted motions of curling rocks that are indisagreement with observed motions of real curling rocks.}, added-at = {2012-02-24T13:42:31.000+0100}, author = {Shegelski, Mark R. and Reid, Matthew}, biburl = {https://www.bibsonomy.org/bibtex/2aea5272dea1ec8748ff4a5514c85349c/cckonstanz}, interhash = {dc19926d3d35d2fcec3c21855bda0dc2}, intrahash = {aea5272dea1ec8748ff4a5514c85349c}, journal = {Canadian Journal of Physics}, keywords = {Curl Curling Curlingstein Reibung}, month = nov, note = {Editorial Material}, number = 11, pages = {903-922}, timestamp = {2015-07-16T22:49:11.000+0200}, title = {Comment on: Curling Rock Dynamics - The Motion of a Curling Rock: Inertial vs. Noninertial Reference Frames}, volume = 77, year = 1999 }