A 400 g ball swings in a vertical circle at the end of a 1.5 m-long string. When the ball is at the bottom of the circle, the tension in the string is 11 N. What is the speed of the ball at that point?The post A 400 g ball swings in a vertical circle at the end of a 1.5 m-long string. When the ball is at the bottom of the circle, the tension in the string… first appeared on Nursing School Essays.