When a mechanic wants to empty a gasoline tank of a car,he fills a plastic tube with gasoline,dips one end of the tube into the gasoline in the tank,and puts the one end at a empty drum lower than the gasoline tank of the car.Why does this technique work?
its actually a working model of a syphen pump actually the receiving end is at a lesser height so due to the pull of the mouth the fluid rises and due to less altitude flows down creating vacuum which the remaining liquid seeks to fill thus acting like a pump
He makes use of the syphoning effect. you put in a protracted adequate plastic tube into the gas tank and suck as to hold the gas to fill the tube (upwards). earlier achieving mouth, very rapidly pass tube downwards pointing to floor, making particular the tube will now be decrease than the gas tank hollow, this variety, the gas trapped in tube will fall via gravity and it will create a vacuum effect which will suck the gas out.
It is called siphoning. It is where a liquid will always travel to the lowest point, when and only when, no air is present. This is the reason the pipe is filled with gas before putting it into the tank.
gravity and suction! the tube that is full of petrol wants to empty it's self into the lower empty tank which creates suction on the upper tank (as long as one end is in petrol) and gravity is always pulling the liquid or petrol towards the lower tank! Hope this helps
It will work if only half the tube is filled so a column of air will be trapped between both ends. As the gasoline in the tube flows out of the tube, it pulls the column of air between gasoline and the other end inserted into the tank creating a suction effect. The empty barrel has to be lower because as gasoline inside the tank is drawn into the tube, gravity has to take over to make the gasoline flow downward.
