Forces and Pressure
WONG MIN HUI .により
1. Extension spring balance The spring stretches when a force pull on it The greater the force, the more the spring stretches
2. Pressure
2.1. Pressure is the force acting per unit area.
2.2. pressure increases when: The force increases; or The area decreases
2.3. SI Unit : N/m2 or Pascal (Pa)
3. We cant see a force, but we can observe the effects of a force.
4. How to measure Force? By using force meters or Newton meters
5. Compression Spring Balance The spring compresses when a force push on it The greater the force, the more the spring compresses
6. Pressure = Force/Area
7. Force
7.1. A push or pull
7.2. Causes Change
7.2.1. Effects
7.2.1.1. Move a stationary object Make an object move faster or slower Stop a moving object Cause an object to change direction Change the shape of an object