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- #2

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Is ##R## the radius of the cylinder? And what do you mean by "tangential" velocity?

- #3

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R is the radius yes and by tangential velocity I mean the linear velocity of a point on the edge of the cylinder.Is ##R## the radius of the cylinder? And what do you mean by "tangential" velocity?

- #4

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The speed of a point on the edge of the cylinder relative to the axis of rotation is the same as the linear speed of the cylinder.R is the radius yes and by tangential velocity I mean the linear velocity of a point on the edge of the cylinder.

Exercise: prove this for rolling without slipping.

The speed of a point on the edge of the cylinder relative to the surface, therefore, varies from ##0## to twice the linear speed of the cylinder.

Exercise: draw a diagram to convince yourself of this.

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