Question

Calculate the pressure exerted on the ground if a boy of mass 40 kg stands on the one foot . the area of his shoe is 150 cm²​

Answer 1

Answer:

$\huge\mathbb\pink{Hello\: Mate}$

When the man is lying:

Pressure

=

Force

Area

Force

=

m

g

=

(

80 kg

⋅

9.81 m/s

2

)

=

784.8 N

P

=

784.8 N

0.6 m

2

=

1308 Pa

When the man is standing:

Pressure

=

Force

Area

The same force as above because of the same weight:

Force = 784.8 N

So

P

=

784.8 N

80

×

10

−

4

m

2

=

98 062.5 Pa

Note: Do not forget to convert

cm

2

to

m

2

!