A 20-Kg Stone Is Tied to a 0

question 60

Multiple Choice

A 2.0-kg stone is tied to a 0.50 m long string and swung around a circle at a constant angular velocity of 12 rad/s.The circle is parallel to the xy plane and is centered on the z axis, 0.75 m from the origin.The magnitude of the torque about the origin is:

• A)0 N∙m
• B)6.0 N∙m
• C)14 N∙m
• D)72 N∙m
• E)108 N∙m

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