Question

4. A cube of edge length 10 cm is placed on
table and its
weight
is 20 N. Calculate the
pressure consider exerted by it on the table.​

Answer 1

Explanation:

surface area of cube

= a²

=10x10cm²

=100 cm²

force

=20N

pressure= force/area

=20/100

= 0.2 Pa

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Answer 2

Given

• Edge of cube = 10cm = 10/100 = 0.1m
• Weight of cube = 20N

To find

• Calculate the pressure exerted on the table

Solution

As we know that

→ Area of cube = 6a²

→ Area of cube = 6 × 0.1 × 0.1 = 0.06m²

→ Pressure = Force/Area

→ Pressure = 20/0.06

→ Pressure = 333.3 N/m²

Hence,

• Pressure exerted on the table = 333.3N/m²