Question

A brick is 40 cm. long, 10 cm. wide and 10 cm. thick. It weighs 20 N lying on the ground. Find the pressure exerted by the brick on the ground. *​

Answer 1

Explanation:

l=40 , b=10 , h=10

force = weight= 20

area of brick= 2(lb+bh+hl)

2(40×10+10×10+10×40)

2(400+100+400)

2×900 = 1800 cm^2

pressure=force / area

=20/1800

= 1/90

hope this helps....!!!