Question

A force of 60 N applies a pressure of 6 bar when acts perpendicularly on an area , then area is

Answer 1

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Q1)what force will exert a pressure of 50000 pascals on an area of 0.5 meter square ?

Q2)find out the area of a body which experiences a pressure of 500 pascals by a force of 100 N

Q3)calculate the pressure exerted by a force of 300N(newton) acting on an area of 30cm square

Q4)what will be force required to exert a pressure of 20000 pascal on an area of 1 cm square ?

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★ Pressure:-

→ Pressure is defined as the force exerted on a surface per unit surface area. Pressure is a scalar. 

→ P = F / A

→ Its unit is Pascal = Newton / meter².

★ Other units of pressure:-

1) F = P × A

= 50, 000 Pascals × 0.5m

= 25, 000 Pascals or N/m²

2) Surface Area A = Force / Pressure

= 100 N / 500 pa

 = 1/5 m² 

3) Area = 30 cm² = 30 / (100*100)  meter²

→ Pressure = F / A

= 300 N / (3/1000)

= 100 * 1000 pa  = 1 × 10⁵ pa

4 )  Area =  1 cm² = (1/100)² meter²

 → Force needed = P A

= 20, 000 pa × (1/100²) m²

= 2 Newtons

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