Free Body Diagram

The video tutorial explains the concept of forces acting on objects and introduces free-body diagrams as a tool to illustrate these forces. It provides examples, such as a book on a table and a person lifting weights, to demonstrate how forces like gravity and normal force interact. The tutorial highlights the importance of free-body diagrams in physics and biology, particularly in biomechanics, with applications in fields like sports medicine and paleontology.

What is the primary purpose of a free-body diagram?

• To measure the weight of an object

• To determine the color of an object

• To illustrate the forces acting on an object

• To calculate the speed of an object

In the free-body diagram of a book on a table, what force acts upwards?

• Gravitational force

• Frictional force

• Normal force

• Magnetic force

Why does the book remain stationary on the table according to the free-body diagram?

• The forces are balanced

• The forces are unequal

• There is no force acting on the book

• The table is moving

What force is exerted by the bicep muscle when lifting weights?

• Frictional force

• Gravitational force

• Normal force

• Pulling force

In biomechanics, what is the role of a free-body diagram?

• To calculate the speed of vehicles

• To predict weather patterns

• To understand the motion of living organisms

• To design sports equipment