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Question
A pressure of 10 Pa acts on an area of 3.0 m2. What is the force acting on the area ? What force will be exerted by the application of same pressure if the area is made one-third ?
Solution
Area = 3 m2
Pressure = 10 Pa
Force = ?
`"Pressure" = "Force"/"Area"`
Pressure × Area = Force
10 × 3 = Force
30 N = Force
Answer: Force = 30 N.
If the area is made one-third, then
Area = 3 m2 (1/3 of 3 m2) = 1 m2
Pressure = 10 Pa
Force = ?
`"Pressure" = "Force"/"Area"`
Pressure × Area = Force
10 × 1 = Force
10 N = Force
Answer: Force =10 N.
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