What is a Free Body Diagram?

What does a Free Body Diagram represent?

• Only the gravitational force acting on an object

• All the forces acting upon an object

• Only the applied force on an object

• Only the frictional force on an object

Tags

NGSS.MS-PS2-2

Fill in the blank: In a Free Body Diagram, arrows represent the _______.

• forces

• velocities

• distances

• masses

Tags

NGSS.MS-PS2-5

Which of the following is NOT true about force arrows in a Free Body Diagram?

• They are labeled according to type

• They are always the same length

• They point in the direction of the force

• Their length is proportional to the strength of the force

To determine what types of forces are acting on an object, you should ask if there is a planet, a charge, or a magnet nearby. What does the presence of these indicate?

• There is an F_grav, F_elect, or F_magnet acting on the object.

• The object is moving at a constant speed.

• The object is not affected by any forces.

• The object is only affected by friction.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Is anything touching the object right now?

• Yes

• No

• Maybe

• Not sure

Refer to the diagram of forces acting on the object. Which force acts upward on the object?

• F_grav

• F_norm

• F_fric

• F_app

Tags

NGSS.HS-PS2-1

Refer to the diagram of forces acting on the object. Which force represents the applied force?

• F_grav

• F_norm

• F_fric

• F_app

According to the instructions for drawing free body diagrams, the first step is to draw an arrow for each force, directed in the ______ that it acts.

• direction

• color

• length

• shape

According to the instructions for drawing free body diagrams, what does a longer arrow indicate?

• A longer arrow indicates a stronger force.

• A longer arrow indicates a weaker force.

• A longer arrow indicates a smaller mass.

• A longer arrow indicates a slower speed.

Look at the diagram showing a book at rest on a table. Which forces are acting on the book?

• Only gravity

• Only the normal force

• Gravity and the normal force

• Friction and gravity

Tags

NGSS.MS-PS2-4