Why there are holes on hoardings as well as clothes or plastic banners of
advertisements hanged freely?
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Air exerts pressure in all directions. Due to this pressure, the banners and hoardings may tear or fall down. Holes will let the wind pàss and they do not become loose and fall down. Hence, holes are made in hanging banners and hoardings.
wow are u in class 8th too
hope it helps you
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