Force

1. include

1.1. Frictional force

1.1.1. New node

1.2. Elastic spring force

1.2.1. New node

1.3. Gravitional force

1.3.1. Definition:

1.3.1.1. How do we measure the force of gravity?

1.3.1.1.1. Weight

1.3.1.1.2. Mass

1.4. Magnetic force

1.4.1. New node

2. Pull

2.1. or

2.1.1. Push

3. Effects on an object