*13-104. The arm is rotating at a rate of 0 = 5 rad/s when = 2 rad/s² and 0 = 90°. Determine the normal force it must exert on the 0.5-kg particle if the particle is confined to move along the slotted path defined by the horizontal hyperbolic spiral r = 0.2 m. Ans: Np = 0.453 N in +n, P = 1.66 N in -0 0.2 r = = 5 rad/s, 2 rad/s² 0 = 90° =

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