Why does the top of a wheel move faster than the bottom?

Why does the top of a wheel move faster than the bottom?

What is the difference between rolling with and without slipping?

Does the center of a disc spin faster?

The further a point is from the center, the faster it travels. So the simple answer is yes, even though they’re rotating together, the outside edge of a ceiling fan blade moves faster than its inside edge.

What is the motion of a moving wheel?

The smaller wheel (the wheel with fewer teeth) will always turn faster than the larger wheel (the wheel with more teeth). The small wheel turns in the same direction as the large wheel, and in the opposite direction as the medium wheel. The small wheel turns fastest; the large wheel turns slowest.

In reality the bottom of the wheel indeed does not move. Otherwise it would be skidding and have a poor grip on the surface since static friction (force preventing two surfaces from starting to move relative to each other) is higher than dynamic friction (force opposing skidding of two surfaces).

Does the top of a wheel move faster than the bottom?

The bottom of the wheel is not moving, while the top of the wheel will be moving twice as fast as the translational velocity of the center of mass of the wheel. The translational velocity of the center of mass of the wheel depends on how big the wheel is (radius) and how quickly it is rotating (angular velocity).

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