1. The problem statement, all variables and given/known data For a conical pendulum: Construct a free-body diagram for the pendulum and derive an expression for the acceleration in terms of the gravitational field strength g, the length L of the pendulum, the radius r of the circular path of the pendulum, and the frequency f of oscillation. (Hint - first derive an expression for tanθ the angle between the string and the vertical.) 2. Relevant equations a=v^2/r a=Δv/Δt a=ƩF/m 3. The attempt at a solution Have done free body diagram, can't figure out how to make equation.