physics 211 rolling motion of a rigid body vector product and torque angular momentum rotation of...
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DESCRIPTION
As then one can see that the center of mass moves at v cm by noting that 2 f angular frequency= angular speed where f frequency of rotation, which has units rps = revolutions per second or cps = cycles per second Which shows that the distance traveled by the center of mass in pure rolling motion in one second is 2 r f 2 r 2 r