A ball of mass `m` is rotating in a circle of radius `r` with speed `v` inside a smooth cone as shown in figure. Let `N` be the normal reaction on the ball by the cone, then choose the correct option:

Options

A. `N cos theta = mg`
B. `g sin theta = (v^(2))/(r) cos theta `
C. `N sin theta - (mv^(2))/(r) = 0`
D. none of these

Answer

A, B, C

Explanation

`N = mg cos theta (mv^(2))/(r) = mg sin theta `