# Box sliding up an inclined plane with constant velocity

1. Apr 17, 2005

### 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....

2. Apr 17, 2005

### marlon

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