The angular velocity of a wheel rotating on a horizontal

Chapter 2, Problem 21Q

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QUESTION:

Problem 21Q

The angular velocity of a wheel rotating on a horizontal axle points west. In what direction is the linear velocity of a point on the top of the wheel? If the angular acceleration points east, describe the tangential linear acceleration of this point at the top of the wheel. Is the angular speed increasing or decreasing?

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QUESTION:

Problem 21Q

The angular velocity of a wheel rotating on a horizontal axle points west. In what direction is the linear velocity of a point on the top of the wheel? If the angular acceleration points east, describe the tangential linear acceleration of this point at the top of the wheel. Is the angular speed increasing or decreasing?

ANSWER:

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The situation is shown below with a schematic.

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