APFIVE Condition for Rolling Without Slipping
A disk slides across a rough surface while also rotating. If the coefficient of kinetic friction is μk, what determines when the disk will transition to pure rolling motion?
A
When the normal force equals μk times the disk’s weight
B
When the point of contact has zero velocity relative to surface
C
When rotational kinetic energy equals translational energy
D
When the disk’s acceleration becomes zero
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