Condition for Rolling Without Slipping
A disk is both sliding and rotating as it moves across a rough surface with a coefficient of kinetic friction μk. Which condition indicates the moment the disk begins to roll without slipping?
A
When the point of contact has zero velocity relative to surface
B
When the normal force equals μk times the disk’s weight
C
When the disk’s acceleration becomes zero
D
When rotational kinetic energy equals translational energy
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