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A simple pendulum is released from horiz...

A simple pendulum is released from horizontal position. Then which of the following statements are Wrong?
(A) Angle between string and vertical when `T=mg` is `cos^(-1)(1/3)` (B)Angle between string and vertical when acceleration is horizontal is `tan ^(-1)(sqrt(2))`
(c) speed of ball when T=mg is `sqrt((2gR)/(3))`

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