# Circular motion lab problem

## Homework Statement

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.)

a=v^2/r
a=Δv/Δt
a=ƩF/m

## The Attempt at a Solution

Have done free body diagram, can't figure out how to make equation.

Last edited:

haruspex
Homework Helper
Gold Member
2020 Award
There is a specific format you are supposed to use on this forum.
What do you have for the forces - just describe them, don't worry about a diagram.
What do you have for the acceleration?

Thank you for replying; didn't see I had to use that form.
As for forces there is the force of gravity on the pendulum mass (downwards), and the tension in the string.
As for the acceleration - I have no numerical value for it. The question needs no actual values - just variables to make the equation (a in terms of g, L, r, and f).

haruspex