I'm studying Newton's Law of Motion in Physics class. I know if you increase the angle of the ramp, the force needed will increase to. But what would happen if its traveling a constant speed?

Moving at constant speed up a ramp requires a force equal to the objects weight times the sine of the angle of incline. Two examples: (a) if the ramp is at zero degrees (horizontal, like a flat road) no force is required to maintain its connstant velocity; (b) but if the ramp is vertical (like climbing a wall) the force needed is equal to the object's weight.