A ball swings in a vertical circle at the end of a rope 1.50 m long. When

Question:

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 (─22.5i + 20.2j) m/s2. At that instant,
(a) Sketch a vector diagram showing the components of its acceleration,
(b) Determine the magnitude of its radial acceleration, and
(c) Determine the speed and velocity of the ball.