What is the magnitude of the acceleration of a speck of clay on the edge of a potter's wheel turning at 42 rpm (revolutions per minute) if the wheel's diameter is 34 cm ?

Explanation:

The centripetal acceleration of an object moving in a uniform circular motion is given by the following equation:

Where:

 is the angular velocity of the speck of clay

 is the radius of the potter's wheel, being  its diameter (hence )

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