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Question

A porter keeps a towel on his head to carry a load to _____.

A
increase the pressure due to the load
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B
reduce the pressure to zero due to the load
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C
minimise the pressure due to the load
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D
balance the load
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Solution

The correct option is C minimise the pressure due to the load
From definition of pressure,
Pressure=ForceArea

Here, the force applied is kept constant and the pressure is inversely proportional to the area. By keeping a towel on the head, the porter increases the contact area and hence minimizes the pressure that the load exerts on his head.

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