June 26, 2012

Today, we began the day off with an introduction to the concept of normal force:
- Contact force
- Perpendicular
- Not always upwards
- Adjusts

Next, we learned about  interaction diagrams and free body diagrams, which are both ways to accurately measure forces between different objects.

        

In addition, our lab today consisted of using interaction diagrams and free body diagrams to calculate the proportions of force between the different ways that our soccer ball hover cart moved. For example, we saw that the force of gravity on Earth is always acting on both person one, person two, and on the hover cart.