Question

A ball suspended by a thread swings in a vertical plane so that its acceleration in the extreme position and lowest position are equal. The angle $\theta$ of thread deflection in the extreme position will be-

• A. ${\tan }^{-1}\left(2\right)$
• B. ${\tan }^{-1}\left(\sqrt{2}\right)$
• C. ${\tan }^{-1}\left(\frac{1}{2}\right)$
• D. $2{\tan }^{-1}\left(\frac{1}{2}\right)$

Answer 1

The correct option is D $2{\tan }^{-1}\left(\frac{1}{2}\right)$