question_answer

A particle originally at rest at the highest point of a smooth vertical circle is slightly displaced. It will leave the circle at a vertical distance h below the highest point such that

A)             \[h=R\]

B)                      \[h=\frac{R}{3}\]

C)             \[h=\frac{R}{2}\]      

D)             \[h=\frac{2R}{3}\]