Achild whirls a ball in a vertical circle. assuming the speed of the ball is constant (an approximation), when would the tension in the cord connected to the ball be greatest?
a. a little after the bottom of the circle when the ball is climbing.
b. a little before the bottom of the circle when the ball is descending quickly.
c. at the bottom of the circle.
d. nowhere; the cord is stretched the same amount at all points.
e. at the top of the circle.
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