Question

What does a Porter wear turban on his head when he has to carry heavy loads? Describe a simple experiment to illustrate that air exerts pressure.​

Answer 1

Answer:

Question

Why does a Porter wear turban on his head when he has to carry heavy loads?

Answer

Porters wear turbans when they have to carry heavy loads on their heads, to increase the area of contact. This reduces the pressure on the head.

Question

Describe a simple experiment to illustrate that air exerts pressure.

Answer

Procedure - Take a tin-can having an air tight cap (screw cap). Remove the cap and boil some water in it, so that steam comes out and in this way air from inside goes out. ... Observation - The can crumbles due to air pressure from outside. This proves that air exerts pressure.

Answer 2

Answer:

Porter place a round piece of cloth on their heads when they have to carry heavy loads so as to increase the area on this head. Hence, the pressure on the head gets reduced.

$As, \: \: \: P= \frac{area}{force}$

Describe a simple experiment to illustrate that air exerts pressure.

Procedure - Take a tin-can having an air tight cap (screw cap). Remove the cap and boil some water in it, so that steam comes out and in this way air from inside goes out. While boiling replace the cap and allow it to cool. Vapours inside condense and form water creating vacuum above them.

Observation - The can crumbles due to air pressure from outside. This proves that air exerts pressure.