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A Mass on a Turntable: Conceptual


(Intro 1 figure) A small metal cylinder rests on a circular turntable that is rotating at a constant rate, as illustrated in the diagram.

Part A

Intro 1

 

A) Which of the following sets of vectors best describes the velocity, acceleration, and net force acting on the cylinder at the point indicated in the diagram?  

=> e

B) Let R be the distance between the cylinder and the center of the turntable. Now assume that the cylinder is moved to a new location R/2 from the center of the turntable. Which of the following statements accurately describe the motion of the cylinder at the new location?

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The speed of the cylinder has decreased.

The magnitude of the acceleration of the cylinder has decreased.


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