A "Show All Your Work!" Example

The video tutorial emphasizes the importance of showing all work in physics problems, using a book at rest as an example to explore forces such as friction and gravity. It explains Newton's second law, particularly in the Y direction, and highlights situations where the force normal and force of gravity are not equal. Demonstrations with a force platform illustrate how applied force affects the force normal. The lesson concludes with a reminder of the importance of understanding these concepts for future physics problems.

How does the free body diagram change when the force applied is directed downward?

Discuss the relationship between the normal force and the force of gravity in different scenarios.

Provide examples of situations where the normal force and force of gravity are not equal in magnitude.