Consider a pendulum made of a massless rod of length and a point mass m. Assume conditions

Consider a pendulum made of a massless rod of length ℓ and a point mass m. Assume conditions have been set up so that the mass moves in a horizontal circle. Let θ be the constant angle the rod makes with the vertical. Find the frequency, Ω, of this circular motion in three different ways.
(a) Use F = ma. (The net force accounts for the centripetal acceleration.)22
(b) Use τ = dL/dt with the pendulum pivot as the origin.
(c) Use τ = dL/dt with the mass as the origin.