FORCES AND PRESSURE
by Quah Wen Chyi
1. Effect of force
1.1. Forces make objects start or stop moving – like when you kick or stop a football, you need to put a force on the ball with your foot. Forces can also change an object's shape – like when you crush an empty drinks can.
2. What is a force?
2.1. a force is a push or a pull
3. How to measure a force
3.1. Determine the mass of an object. Measure the acceleration. Multiply and divide the result by a conversion constant.
4. Important forces around us
4.1. Gravitational force to keep us grounded.
4.2. Frictional force,to help us grip hold of things.
4.3. Magnetic force to work certain objects
5. What is pressure
5.1. The continuous physical force exerted on or against an object.
6. How can we increase pressure?
6.1. Decrease the area
7. How can we decrease pressure?
7.1. Increase the area
