'Sun min speed' diaporamas de présentation

At x = 2.0 m, the direction of the force acting on the ball is

A stone of mass m is connected to the end of a string and held at position A. The stone is released and then it swings freely in a vertical circular arc passing the points A, B and C. After the stone is released, the string tension F at points A, B and C are such that: A F A = F B = F C

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