A jewel smith wishing to buff a finished piece of jewelry

Last updated: 6/7/2023

A jewel smith wishing to buff a finished piece of jewelry attaches a buffing disk to his drill The radius of the disk is 2 80 mm and he operates it at 2 20 x 10 rad s a Determine the tangential speed in m s of the rim of the disk m s b The jeweler increases the operating speed so that the tangential speed of the rim of the disk is now 285 m s What is the period of rotation in seconds of the disk now S