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Force and Pressure (Overview) Video Lecture | Science Class 8
FAQs on Force and Pressure (Overview) Video Lecture - Science Class 8
| 1. What is force and pressure? |  |
Ans. Force is a push or pull acting on an object, while pressure is the force applied per unit area. Force can change the state of motion of an object, while pressure can change the shape or volume of an object.
| 2. What are some examples of force in daily life? | |
Ans. Some examples of force in daily life include pushing a door open, kicking a ball, lifting weights, and pulling a drawer. These actions involve applying force to move or change the state of an object.
| 3. How is pressure calculated? | |
Ans. Pressure is calculated by dividing the force applied on an object by the area over which the force is applied. The formula for pressure is P = F/A, where P represents pressure, F represents force, and A represents area.
| 4. What is the difference between force and pressure? | |
Ans. The main difference between force and pressure is that force is a push or pull acting on an object, while pressure is the force applied per unit area. Force is a vector quantity, while pressure is a scalar quantity.
| 5. How does pressure affect objects? | |
Ans. Pressure can affect objects by changing their shape or volume. When a higher pressure is applied, objects tend to compress or become smaller in volume. Conversely, when a lower pressure is applied, objects tend to expand or increase in volume.
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