A 50-lb object P moves along the spiral path r (0.1)θ ft, where θ is in radians. Its angul...

A 50-lb object P moves along the spiral path r (0.1)θ ft, where θ is in radians. Its angular position is given as a function of time by θ = 2t rad, and r = 0 at t = 0. Determine the polar components of lire total force acting on the object at t = 4 s.