Physical short answer, put an object on the conveyor belt why the first to accelerate after the uniform speed
Because the moment just put the speed is no speed, and between the conveyor belt and the friction between the object, then the transmission with the object to do even acceleration movement. When the conveyor belt is long enough, after a certain period of time the same speed as the conveyor belt, it becomes uniform.
The conveyor belt is uniform, the object placed on top, the initial speed is zero, by the friction force, began to do even acceleration movement; when the object speed and the same conveyor belt, the object to do uniform linear motion.
Assuming that the conveyor belt is horizontal and uniform, it is v and the speed direction is right. The object is just put on the conveyor belt (non-conveyor end), the instantaneous speed of the object is 0, the speed of the conveyor belt is greater than the speed of the object, the friction of the five parts of the conveyor belt to the left, the object friction to the right, the object in the friction Under the effect of the right to do even acceleration movement. When the speed of the object to accelerate to the same speed with the conveyor, that is, v, at this time, the two are stationary, do uniform motion.
Because the moment just put the speed is no speed, and between the conveyor belt and the friction between the object, then the transmission with the object to do even acceleration movement. When the conveyor belt is long enough, after a certain period of time the same speed as the conveyor belt, it becomes uniform....
