Calculate the pressure exerted on a surface by a brick of weight 10 N. The area in contact with the surface is 20 cm2
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Question
Calculate the pressure exerted on a surface by a brick of weight 10 N. The area in contact with the surface is 20 cm2
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Answer: 5000
Explanation: pressure: force / area
SI unit of force: newton
SI unit of area: metre²
Force exerted: 10 N
Area on which it is exerted : 20 cm²
Since area has to be in m² , we convert cm² to m² by dividing it by 10000( m:100cm, 1m²: 10000 cm²)
Area=20/10000: 0.002 m²
So, pressure= 10/0.002=5000 pa( SI unit of pressure is pascal)
Answer:
Explanation:
Force of brick = 10 N
Area of surface = 20 cm^2
Pressure = force / area
∴ Pressure = 10 / 20
= 1 / 2 or 0.5 Pa
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