A ball tied to the end of the string swings in a vertical circle under the influence of gravity.
A. When the string makes an angle `90^(@)` with the vertical, the tangential acceleration is zero and radial acceleration is somewhere between minimum and maximum.
B. When the string makes an angle `90^(@)` with the vertical , the tangential acceleration is maximum and radial acceleration is somewhere between maximum and minimum.
C. At no plae in circular motion, tangential acceleration is equal to radial acceleration `(` in magnitude `)`
D. When radial acceleration has its maximum value, the tangential acceleration is zero.
