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I have learned that if a wheel is rolling without slipping, then the velocity of point of contact of a wheel with respect to the ground is zero instantaneously.

However, I am having some problems while trying to understand that.

We can express the point of contact's velocity as;

V = Vrot + Vtrans

It is zero because simply Vrot = -Vtrans.

But after that instant, the point moves and an adjacent point becomes the point of contact -- thus rolling appears.

If the point's velocity is zero, then it should stay at the bottom as the point of contact. And if it stays at / as point of contact, its velocity should still be zero.

There is a circular logic here;

How does it move if its velocity is zero ? And how does it have velocity greater than zero if it doesn't move ? ( since Vrot = -Vtrans if it stays at the bottom, its velocity would be zero.)

Thanks in advance.