Yes, we can increase the pressure if we keep the force applied constant and change the area over which the force is applied. This is based on the definition of pressure:
Understanding Pressure
Pressure is defined as the force acting perpendicularly per unit area. The formula for pressure is:
Pressure (P) = Force (F) / Area (A)
This equation highlights the relationship between pressure, force, and area.
Increasing Pressure with Constant Force
To increase pressure while keeping the force constant, the area on which the force is exerted must be decreased. Think of it this way: if you apply the same amount of force over a smaller area, that force is concentrated, resulting in higher pressure.
Examples
- Pushing a Thumb Tack: When you push a thumb tack, the force you apply is constant. However, because the point of the tack has a very small area, the pressure exerted on the wall is high enough to pierce it.
- Sharpening a Knife: Sharpening a knife decreases the area of the blade's edge. With the same cutting force, a sharper knife (smaller area) exerts higher pressure, making it easier to cut through objects.
How Change Relates
The question mentions "change." The change that is relevant is the change in area. If the area decreases while the force remains the same, the pressure will increase.
Summary
In conclusion, while keeping the force constant, decreasing the area over which the force is applied will result in an increase in pressure.
