13-103. The amusement park ride rotates with a constant angular velocity of = 0.8 rad/s. If the path of the ride is defined by r =(3 sin 0 + 5) m

and z =(3 cos 0) m, determine the r, 6, and z components of force exerted by the seat on the 20-kg boy when 0 = 120°. Problem 13-103 N 0 9 = 0.8 rad/s