Question

7. Calculate the pressure exerted by a brick, which applies a force of 30 N, when
(a) It is placed upright on the soil.
(b) When it is placed on its widest base.
The length, breadth and height of the brick are 20cm, 10cm & 5 cm respectively

Answer 1

when placed upright 0.6N
when placed on widest base 0.3N

Answer 2

Answer:

a.)Area of brick when upright=5cm*10cm=50cm

pressure=force/area

=2.5/50/100*100

2.5*10000/50

=500 Pa

b.) Area of the widest base=25cm*10cm=250cm

pressure=2.5/250/100*100

=2.5*10000/250

=100 Pa