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## Homework Statement

[PLAIN]http://img375.imageshack.us/img375/7161/physics.png [Broken]

I have to find the acceleration of A to B.

## Homework Equations

My problem is that I'm not sure to add normal force with the force of gravity x component.

Fnetx=Fgx

m*Ax=m*g*sin(theta)

Ax=g*sin(theta)

## The Attempt at a Solution

Ax=9.8*sin(20)

=

**3.35 m/s^2**

Should I have added normal force to the Fgx since Fnet is the sum of all forces? I thought you would only include this if friction was given.

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