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A 0.21-kg ball on a stick is whirled on a vertical circle at a constant speed. When the ball is at the three o'clock position, the stick's tension is 18 N.

(a) Find the tension in the stick when the ball is at the twelve o'clock position.

T =

(b) Find the tension in the stick when the ball is at the six o'clock position.

T =

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