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If the thrust experienced by an object of area 1000┬аcm2 is 50┬аN, then the pressure exerted on the object is:
500 Pa
20 Pa
5 Pa
30 Pa
500 Pa
Pressure is defined as the force (thrust) applied perpendicularly to a specific surface area. To calculate it, we divide the magnitude of the thrust by the contact area, ensuring the units are consistent (converting cm2 to m2).
Pressure is defined as the force (thrust) applied perpendicularly to a specific surface area. To calculate it, we divide the magnitude of the thrust by the contact area, ensuring the units are consistent (converting cm2 to m2).
If you push a pin into a board, the small area concentrates the force to create high pressure, allowing it to penetrate; if you use your thumb with the same force, the larger area results in low pressure, preventing injury.
P=AFтАЛ тАФ Formula for pressure where F is thrust and A is area.
1m2=10000cm2 тАФ Conversion factor for area units.
The fundamental formula for pressure is P=AFтАЛ, where F is the thrust (force) and A is the area. Since the SI unit for pressure (Pascal) requires force in Newtons and area in square meters, we must convert 1000cm2 to 0.1m2 (1000├Ч10тИТ4m2). Substituting these values gives P=0.1m250NтАЛ=500Pa.
Thrust is the total force acting on a surface.
Pressure is a scalar quantity representing the distribution of force per unit area.
The SI unit of pressure is the Pascal (Pa), equivalent to N/m2.
High pressure enables tools like needles and knives to work effectively by concentrating force.
Excessive pressure can cause structural damage or material deformation.
Designing foundations for heavy buildings to reduce pressure on soil.
Sharpening blades to decrease contact area and increase cutting efficiency.
Standard unit conversion: 1000cm2=1000├Ч(10тИТ2m)2=0.1m2.
Option B (20 Pa), C (5 Pa), and D (30 Pa) are incorrect as they result from arithmetic errors in the denominator unit conversion.
A is correct тАФ The pressure exerted is calculated by dividing 50 N by 0.1 m┬▓, resulting in 500 Pa.
Always verify unit consistency before performing calculations; converting cm2 to m2 is a common trap in Physics problems.
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