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Chapter 2

Forces and Newton’s laws

LEARNING OBJECTIVES

In this chapter you will learn how to:

●treat bodies as point particles

●construct and interpret free-body force diagrams

●apply the equilibrium condition, ΣF = 0

●apply Newton’s three laws of motion

●solve problems involving frictional forces

●explain why we have acceleration in circular motion

●apply Newton’s laws to circular motion

●identify centripetal forces.

GUIDING questions

●What is the connection between force and motion?

●How does knowledge of the forces on a body allow a prediction of the state of motion of a body?