Explain why holes are made in hanging banners and hoardings

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asked Jan 20, 2018 in Science by Rohit Singh (61,782 points) 36 143 458
Explain why holes are made in hanging banners and hoardings

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answered Jan 20, 2018 by Ankit Agarwal (28,847 points) 7 33 104
selected Jan 27, 2018 by sarthaks
 
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Air exerts pressure in all directions. If banners and hoardings do not have holes, pressure exerted by wind may tear them off or make them fall. Holes let the air pass through and reduce the air pressure on banners and hoardings.

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