Porters place a circular cloth on their head while carrying loads to ______ between head and load.
A
increase the height
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B
decrease the area of contact
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C
increase the weight
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D
increase the area of contact
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Solution
The correct option is D increase the area of contact The pressure acting is inversely proportional to the area of contact. The porter keeps a circular cloth on his head to increase the area of contact, which inturn decreases the pressure acting on his head.