Ring moving along frictionless arc

[fyonatan]

Homework Statement

The ring (m), which weighs 5Kg, is sliding along a frictionless arc (Shown in the draw).
Arc radius - 1.2 meters.
There are 2 forces applied on the ring:
1) F - 40N and always tangent to the circle.
2) F' - 150N, 30 degrees above the horizon.

Calculate the total Work of the two forces when the body is sliding from A to B, and A to C.

Homework Equations

The Attempt at a Solution

 

[physman55]

What is work defined as? How can you get the component of the force that is working parallel to the arc length? What is the arc length between A and B, B and C? Show some work?

 

[fyonatan]

The work is defined by W= F x D.

The Arc's length between A to B is 1.88 meters.

I really don't know where to start.