Calculating Force on Albert in Lightweight Swing

[jeff1982]

Homework Statement

Your nephew Albert sits on a lightweight swing. Albert has a mass m. You pull horizontally on Albert so that the swing rope of length L maintains an angle $\theta$
with the vertical

Homework Equations

A. Write a Newton's 2nd law equations for the horizontal force components acting on the system.
B. Write a Newton's 2nd law equation for the vertical force components acting on the system.
C. Derive an expression that would allow you to calculate the value of F if you were given m, g, L, and $\theta$

The Attempt at a Solution

A. F=ma, B. F=mg. C. no clue

 

[rock.freak667]

The Attempt at a Solution

A. F=ma, B. F=mg. C. no clue

Start by drawing the free body diagram with the mass at the angle. Then try splitting the weights into 2 components, one in the direction of the string and one tangential to the mass.