Question

A force of 20N acts on an object of area of cross - section 10cm2.calculate the pressure exerted by the body in pascal

Answer 1

thrus=force

=200n

preasure1 =force/area

force=200

area1=0.001 m^2

preasure1=200/0.001=200000pa

preasure2=force/area2

force=200n

area=0.005m^2

presure2=200n/0.005=40000pa

Answer 2

area A=10cm^2=10/1000 m^2
=10^-3m^2
pressure=thrust/area
=20N/10^-3m^2
=2*10^4 N m^-2