A flat uniform circular disk (radius = 2.00 m, mass = 1.00
x102 kg) is initially stationary. The disk is freeto
rotate in the horizontal plane about a frictionless
axisperpendicular to the center of the disk. A 40.0 kg
person, standing 1.25 m from the axis, begins to run on the disk in
acircular path and has a tangential speed of 2.00 m/s relative
tothe ground. Find the resulting angular speed of the disk
(inrad/s) and describe the direction of the rotation.
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