The spring-held follower AB has weight W and moves back and forth as its end rolls on the contoured surface of the cam, where the radius is r and z = asin(2θ). If the cam is rotating at a constant rate θ', determine the force at the end A of the follower when θ = θ₁. In this position the spring is compressed δ₁. Neglect friction at the bearing C.

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Given: W = 0.75 lb 1 = 0.4 ft r = 0.2 ft 01 = 45 deg lb ft a = 0.1 ft rad Ꮎ = 6 - S k = 12 8 = 9.81 EC 2 S