Question

give reason Porter place a large round piece of cloth on their heads when they carry heavy load​

Answer 1

Answer :-

To reduce the effect of pressure.

Explanation :-

Pressure :- The force applied per unit area is known as pressure.

Potters place a round cloth in their heads to reduce the pressure on their heads by increasing the surface area so, the force is applied in maximum area and pressure get reduced.

See this formula,

$\boxed{\sf{ P = \dfrac {F}{A}}}$

also,

$P \propto \dfrac{1}{A}$

here, area is inversely proportional to the pressure.

So, by increasing surface they can reduce the pressure so they can easily carry heavy loads in their head without much pain.