Force&Pressure
by Keerti Karunakaran
1. Gravitational force allows us to stay on the ground and gives us our weight. Without it, we'll be floating.
2. A force is a push or a pull and can change the size or shape of an object, can move a stationary object and can stop a moving object. To calculate force, multiply the mass and speed of object.
3. Frictional force is important as it gives us a grip.
4. Without magnetic force, we cannot use compasses to find direction.
5. We can calculate pressure by dividing force by area and the unit is N/cm2
6. Pressure is force per unit area and can be increased by reducing area or decreased by increasing area.
6.1. Pressure dependson area and force.
