The Tangential Force F Shown in Figure Below Is Applied

The tangential force F shown in figure below is applied to a 2-kg disc with a 30-cm diameter which is allowed to rotate about an axis through its center.The magnitude of this tangential force is given in the graph of F vs.Angular Position.With the disc at rest initially and ignoring frictional torque,determine the disc's angular velocity after one full rotation

A) -20.5 rad/s
B) +20.5 rad/s
C) 0 rad/s
D) -420 rad/s
E) +420 rad/s

Correct Answer:

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