A Thin Circular Hoop of Mass 1

question 24

Multiple Choice

A thin circular hoop of mass 1.0 kg and radius 2.0 m is rotating about an axis through its center and perpendicular to its plane.It is slowing down at the rate of 7.0 rad/s².The net torque acting on it is:

• A)7.0 N∙m
• B)14 N∙m
• C)28 N∙m
• D)44 N∙m
• E)none of these

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