A ball is attached to a string and swung in a horizontal circle at a constant speed. Assume air resistance is negligible. a} Draw a free body diagram of the forcels) acting on the ball in the horizontal plane. Also include in your diagram any non-zero velocity and/or acceleration vector(s) of the ball. Label your coordinate system as the following: 0 Positive is towards the centre of the circle 0 Negative is away from the centre of the circle