Question
*13-112. The pilot of an airplane executes a vertical loop which in part follows the path of a "four-leaved rose,"r = (-600cos 20) ft, where 0 is in radians. If his speed is a constant vp = 80 ft/s, determine the vertical reaction the seat of the plane exerts on the pilot when the plane is at A.He weights 130 lb. Hint
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