Question

A piece of plywood is kept on a table. You have to lift it from the table by blowing air over it at very high speed from a powerful fan. In which direction will you blow air?

(a) in the upward direction
(b) in the downward direction
(c) sideways
(d) in the upward direction below the table

Answer 1

(c) sideways
This will create a low pressure area above the plywood and it will be blown away by the wind coming to low pressure area.