Question

The weight of air in a column of the height of the atmosphere and area 15cm x
15cm is nearly equal to the weight of an object of mass?
Options:
a) 1.115kg
b) 2.165kg
c) 3.185kg
d) 4.225kg​

Answer 1

Answer:

mujhe nahin pata bhai samajh nahin a Rahe question

Answer 2

Given:

An air column of area 15cm×15cm.

To Find:

Mass of the object whose weight will be equal to the weight of the air column.

Solution:

We know that the pressure exerted by the atmosphere on earth is equal to 1 atm $=1.013*10^5 Pa$

Area of the column, $A=15*15=225cm^2=0.0225m^2$

Weight of the air column = Force exerted by the air column

                                     $W=PA$

                                ⇒ $W=1.013*10^5*2.25*10^{-2$

                                ⇒ $W=2.28*10^3N$

Mass of the object with this weight, $m=W/g$

                                                                $=22.8kg$

Hence, the mass of the object whose weight will be equal to the weight of the air column is equal to 22.8kg.