Question

a block of iron of mass 20 kg and a square base of side 4 cm is placed on the ground. Find the pressure exerted on the ground. G is equal to 10 metre per second square

Answer 1

Force=mass x acceleration

Putting in values,

Force = 20*10 = 200N

Pressure= Force/area

=> 200/4x4

=>25/2

=> 12.5 Pascals

Answer 2

Answer:

P=F/A=mg/A=20×10/(0.04×0.04)N/m^2

=(20)×(10)×(10000)/(0.0016)N/m^2

=(20/16)×(10^5)N/m^2

=1.25×(10^5) N/m^2

[P=pressure,F=force or weight of the body,A=base area,All units are strictly in SI system,g=acceleration due to gravity=10 m/S^2

Explanation: Answer is followed by simple explanation.