Rod OA rotates about O in a horizontal plane. The motion of the 0.0417 lb collar B is defined by the relations r=10+6cosлt and 0- (4-81), where r is expressed in ft, t in seconds, and 8 is radians, then the radial components of the force exerted on the collar when 1-0. (8-32.2/s²) r=10+6cost f=-6rsinлt 8=(412-81) 8=(81-8) r=-6² coszt =8 Select one: a.-13.1.lb b. 0.52 lb c. 10165 lb d. -59.2 lb