Box sliding up an inclined plane with constant velocity

[Laurent]

I've been working on this problem all afternoon and i just have a complete blackout and no idea how to solve it:
the question is what force, parallel to the plane has to be applied if the object is moving up an inclined speed at a steady speed of 3.2 m/s.
i have the object's mass and the angle of the inclined plane...
if anyone can relieve me....that would be amazing...i'm so frustrated...

thank you....

[marlon]

I've been working on this problem all afternoon and i just have a complete blackout and no idea how to solve it:
the question is what force, parallel to the plane has to be applied if the object is moving up an inclined speed at a steady speed of 3.2 m/s.
i have the object's mass and the angle of the inclined plane...
if anyone can relieve me....that would be amazing...i'm so frustrated...

thank you....

Well the force that you will need to overcome is the component of gravity along the incline. Suppose the x-axis is along the incline, pointing upwards. the clue is that you have a constant speed : this means that the block is moving with zero acceleration. thus, you have along the incline :

0 = F -mgsin(\theta)

F is the force you are looking for...

regards
marlon