A particle of mass m is suspended from a ceiling through a string of length L. The particle moves in a horizontal circle of radius r. Find a. the speed of the particle and b. the tension in the string. Sch a system is called a conical pendulum.

Options

A. `(rg)/sqrt(L^(2)-r^(2))`
B. `(rsqrtg)/((L^(2)-r^(2))^(1/4)`
C. `(rsqrtg)/((L^(2)-r^(2))^(1/2)`
D. `(mgL)/((L^(2)-r^(2))^(1/2)`

Answer

B

Explanation

`(F)/(r) = (mg)/(sqrt(L^(2)-r^(2))`