Pressure: The Force Within
What factors determine the pressure applied to a body?
The pressure applied on a body depends upon the applied force and .................
How is pressure measured?
Pressure is measured in......... unit.
What is the formula to calculate pressure?
Pressure equals to.............
How can pressure be increased?
Pressure can be increased by decreasing ..............
When sewing clothes, what type of needle makes it easier?
It is easier to sew clothes by a ........... needle.
Answers:
1. area over which force is applied.
2. Pascal (Pa)
3. force per unit perpendicular area over which the force is applied, p=F/A.
4. An increase in the number of gas molecules in the same volume container increases pressure. A decrease in container volume increases gas pressure. An increase in temperature of a gas in a rigid container increases the pressure.
5. large
Pressure is a fundamental concept in physics that plays a crucial role in various aspects of our daily lives. Understanding pressure helps us comprehend how forces interact with different surfaces and objects.
The Force Behind Pressure
When a force is applied to an object, the pressure exerted on it is determined by the magnitude of the force and the area over which it is applied. The larger the force or the smaller the area, the greater the pressure.
Measuring Pressure
Pressure is typically measured in units called Pascals (Pa). This unit is named after Blaise Pascal, a French mathematician, physicist, and inventor who made significant contributions to the understanding of fluid mechanics and pressure.
Calculating Pressure
Pressure can be calculated using the formula: pressure (p) = force (F) / area (A). This formula illustrates the relationship between force, area, and pressure, showing that pressure is essentially the force per unit area.
Increasing Pressure
Pressure can be increased by either applying a greater force or reducing the area over which the force is distributed. In the case of gases, an increase in the number of gas molecules in a fixed volume container or a decrease in container volume can lead to an increase in pressure. Additionally, raising the temperature of a gas in a rigid container can also raise the pressure.
Sewing with Ease
When it comes to sewing clothes, using a large needle can make the task easier. A large needle creates a wider hole in the fabric, allowing for smoother and faster stitching.