Question: A particle describes a horizontal circle in a conical funnel whose inner surface is smooth with speed of 0.5 𝑚/𝑠. What is the height of the plane of circle from vertex of the funnel
(A) 0.25 𝑐𝑚
(B) 2 𝑐𝑚
(C) 4 𝑐𝑚
(D) 2.5 𝑐𝑚
Answer: option (D)
Solution:
