20. (Force and Motion II) A stone which tied to a rope is rotated in a circular path with a constant speed V in clockwise direction as given in figure below. At point A, the rope is breaking up and the stone is released. The radius R of the circular path is 0.50 m. If the period of the motion is given as T = T/20 s calculate; i Magnitude of the centripetal accel- eration, a. Rope ii Time required that the stone hit the ground, t. IR iii Maximum height of the stone with respect to ground, ymar. Ground Hint: Choose the point A as your origin of the your reference frame. Answer: i) 800 m/s? ii) 4.11 s iii) 20.91 m