The small 1.2-kg block slides with a constant speed v = 4 m/s on the circular path of radius r = 2 m in the vertical plane. (a) Determine the normal force exerted on the block by the surface as it passes points A and B, where = 35°. (NA = 21.4 N, NÅ = 19.2 N) (b) Determine the angular position 0 where the block loses contact with the surface. (0 = 144.6°) B A ט

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