Force

1. Types of forces

1.1. Magnetic force

1.1.1. What is a magnetic force?

1.1.1.1. Magnetic force is a force which attracts magnetic materials.

1.1.2. How are magnets used in everyday life?

1.1.2.1. Magnets are found in the doors of the refridgerator, in the needle of the compass,etc.

1.2. Gravitational force

1.2.1. What is gravitational force?

1.2.1.1. Gravitational force is a force which pulls an object towards the Earth.

1.2.1.1.1. New node

1.2.2. Weight

1.2.2.1. The weight of an object depends on the force of gravity pulling on that object.

1.3. Frictional force

1.3.1. What is friction?

1.3.1.1. Friction is a force which occurs whenever two moving surfaces are in contact. It also produces heat.

1.3.2. Advantages of friction

1.3.2.1. Friction between the wheels and the brakes slow down the bicycle.

1.3.3. Disadvantages of friction

1.3.3.1. Friction between the road and the tyres wears out the grooves on the tyres.

2. What is a force?

2.1. A force is a pull or push.

2.2. A force is an example of lifting,bending,stretching,etc.

2.3. The SI unt for force is newton.

3. Effects of a force

3.1. Change the speed of a moving object

3.2. Change the shape or size of an object

3.3. Start or stop a moving object

3.4. Change the direction of a moving object