can u explain the role of pressure in this situation????

Question

can you explain the higher pressure and lower pressure


http://www.madamandeve.co.za/imgs/eve_vacuuming.gif

Answer 1

The higher pressure situation would be if someone important was coming over. In that case she better get my carpets vacuumed well.
The lower pressure situation would be if I was on vacation. Then she could go a couple of weeks without vacuuming.

Answer 2

The motor inside the machine creates low pressure on the side where the vacuum cleaner's tube connects and high pressure where the blower on the vacuum cleaner is. The blower exhausts into the room, diffusing the pressure. The low pressure is confined to the tube, which results in low pressure at the end of the tube, where the vacuum cleaner's rotating brush is. So the neutral pressure of the room (which is higher than inside the tube) forces air down the tube to make up for the air that the motor forced out of the machine.