Question : The minimum speed for a particle at the lowest point of a vertical circle of radius 𝑟, to describe the circle is 𝑣. If the radius of the circle is reduced to one-fourth its value, the corresponding minimum speed will be
(A) 𝑣/4
(B) 𝑣/2
(C) 2𝑣
(D) 4v
Answer : option (B)
Solution :
