A ball swings in a vertical circle at the end of a rope 150, Ask an Expert

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A ball swings in a vertical circle at the end of a rope 1.50 m long. When the ball is 36.9° past the lowest point on its way up, its total acceleration is <-22.5, 20.2> m/s2, where these are respectively the horizontal and vertical components of the acceleration. At that instant,

(a) sketch a vector diagram showing the components of its acceleration?

(b) determine the magnitude of it's radial acceleration?

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