Conveyor belt+incline plane

[VCE_2012]

Consider a conveyor belt on an incline plane, an object mass  of m kg is placed at the bottom of the conveyor, the machine operates the conveyor belt so the object moves up the plane. I remember this from a past exam.
Correct me if I'm wrong by saying:
m*g*sin(theta)=Friction, when: Fnet is up or down the plane or zero.
where theta is the angle made with the ground and the plane.

[abeybaby]

thats correct assuming the block isnt accelerating

[Biceps]

Only if there is no acceleration up or down the plane.