The collar of weight W slides along the smooth vertical spiral rod r = b, where

The collar of weight W slides along the smooth vertical spiral rod r = bθ, where θ is in radians. If its angular rate of rotation θ' is constant, determine the tangential force P needed to cause the motion and the normal force that the rod exerts on the spool at the instant θ = θ1.

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Given: W = 2 lb 01 = 90 deg rad 0 = 4. b = 2 ft S r = be