更新1:
A stone at the end of a sling is whirled in a vertical circle of radius r = 1.14m. The center of the sling is at a height h = 1.75m above the ground. The stone is released at point A when the sling is inclined at 30.0 degrees above horizontal. If the centripetal acceleration of the stone immediately before release is 36.7m/s^2, at what horizontal distance in meters does the stone land as measured from the point directly below the center of the circle?