A particle of mass m suspended by a string of length l revolves in a horizontal circle such that `theta` is the angle which the string makes with vertical. Which of the following statement (s) is/are correct ?

Options

A. Tension in string `= mg cos theta`
B. Speed v of particle `= sqrt((lg sin^(2)theta)/(cos theta))`
C. Time period of revolution `= 2pi sqrt((l cos theta)/(g))`
D. Centripetal acceleration `= g tan theta`

Answer

B, C, D

Explanation

(i) `F cos theta = mg`
(ii)
`F sin theta = (mv^(2))/(L sin theta)`