Question

1. You place a book on your desk, and then you begin to lift one edge of the desk. You make the following observations:
- At first the book does not move.
- When you lift the desk edge higher, the book begins to slide slowly.
- As you lower the desk slightly, the book slows down, then stops.
Use your knowledge of friction to explain EACH observation.

Answer 1

Answer:

You make the following observations: At first the book does not move. When you lift the desk edge higher, the book begins to slide slowly. As you lower the desk slightly, the book slows down, then stops. Use your knowledge of forces and friction to explain your observations.

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