Question

A brick weighing 20N and having dimensions 25cm x 10cm x 5cm is kept on the ground.Calculate its pressure in three different cases or ways.
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Answer 1

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Answer 2

Given:

The weight of brick m=20 N

The dimensions are given length L= 25 cm= 0.25 m

The breadth B= 10 cm=0.10 m

The height H=5 cm=0.05 m

To find:

The pressure on each side

Solution:

The formula of pressure

P=F/A

For first side

P= 20×10/0.25×0.10

P=800 N/m²

For the second side

P= 20×10/0.10×0.05

P=4000 N/m²

For the third side

P=20×10/0.25×0.05

P=1600 N/m²

So the value of each side be 800,4000,1600 N/m²