Question

For the following situations, name the types of forces that are involved.

1. A book sitting on a shelf
a. What is one force acting in this scenario?
b. Is this force a contact or non-contact force?
c. What is a second force acting in this scenario?
d. Is this force a contact or non-contact force?

Answer 1

a. The force acting in this scenario is the force of gravity.

b. The force of gravity is a non-contact force because it acts between two objects without any direct contact between them.

c. The second force acting in this scenario is the normal force, which is the force exerted by the shelf on the book to support it against gravity.

d. The normal force is a contact force because it acts between two objects in contact with each other.

Step-by-step explanation:

A book sitting on a shelf: