In this section we will introduce some of the force types that we will encounter when analyzing systems in the next few lectures. This is not a complete list of all the forces that we will use in this class.

Types of Forces There are a variety of force types were placed into two broad category headings on the basis of whether the force resulted from the contact or non-contact of the two interacting objects.

Draw all the Forces acting on the body as arrows with appropriate direction. The sum of all the Forces acting on the body is the net Force, Fnet. If the Fnet is not zero, the object is accelerating in the …

In this unit, we explored the forces that cause objects on Earth to move in different ways. We learned how forces like friction and gravity are involved in an object’s motion, and we used arrows to show …

Forces as Vectors Last lecture we calculated the force of gravity on a book (i.e. its WEIGHT): Calculate the gravitational force on a 3 kg book held 1 meter above the surface of the earth.

What force really is: the second law We have talked about forces from the begin-ning of this book. We already know a good deal about different kinds of forces. We know that there are four fundamental …

Frictional forces are parallel to the plane of contact between two surfaces, and opposite to the direction of motion or applied force. Friction is discussed in more detail in the Friction section, starting on page …