The Tangential Force F Shown in Figure Below Is Applied

question 61

Multiple Choice

The tangential force F shown in figure below is applied to a 2-kg disc 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,the disc's angular velocity after one full rotation is -31.4 rad/sec.What is the diameter of the disk?

• A)12.7 cm
• B)200 cm
• C)400 cm
• D)9.65 cm
• E)19.2 cm

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