Question

Aswin and Anwar were playing with four bricks each. Aswin arranged his four bricks as shown in figure A. Anwar arranged his bricks as shown in figure B, in order to be a taller one.
Now let us complete the following sentences by choosing the right option below
(equal to, less than, more than)
a) The force of A on the ground is __________ the force of B on the ground.
b) The area that A occupies is ________ B on the ground.
c) The pressure exerted by A is _______ the pressure exerted by B.

Answer 1

Given,

Aswin and Anwar were playing with four bricks each.

We know,

Force, $F=m\times a$

$m=$ mass of four bricks

$a=g=$ acceleration due to gravity

a) The force of $A$ on the ground is equal to the force of $B$ on the ground.

Anwar arranged the bricks on the edge.

b) The area that $A$ occupies is greater than $B$ on the ground.

We know,

$Pressure=\frac{Force}{Area}$

For equal forces, $Pressure\propto \frac{1}{Area}$

Therefore,

c) The pressure exerted by $A$ is lesser than the pressure exerted by $B$.