Question

3. A force of 800 N exerts a pressure on an area of 40
cm². What pressure do they exert on the floor?​

Answer 1

Answer:

20

Explanation:

formul of pressure,

pressure =force/area

so,

force =800N

area =40

now,

800/40=20

i hope you understand

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Answer 2

Answer:

They exerts a pressure of 5000 Pa ( Pascal ) on the floor.

Step-by-step explanation :

Given,

Force, F = 800 N

Area of the floor, a = 40 cm^2

= (40* 0.01 m)^2

= 0.16 m^2

{•°• 1 cm^2 = 1/10000 m^2 = 0.0001 m^2}

We know that,

Pressure = F/a

•°• Pressure = 800 N / 0.16 m^2

= 800 N / 16/100 m^2

= 800 N * 100/16 m^2

= 50 N * 100 /1 m^2

= 5000 N/m^2

= 5000 Pa