Free Body Diagram Review

Which of the following is the primary purpose of a free body diagram?

• To calculate the weight of an object
  

• To visually represent all forces acting on an object
  

• To measure the velocity of an object
  

• To determine the shape of an object

When drawing a free body diagram, what does each force vector represent?

• The shape and size of the object
  

• The amount and type of energy present
  

• The magnitude and direction of a force acting on the object
  

• The speed and acceleration of the object

A box is at rest on a table. What two forces must be included in its free body diagram?

• Gravity and normal force
  

• Gravity and friction
  

• Applied force and air resistance
  

• Tension and friction

A person pushes a box to the right with a constant velocity. Which force must be equal in magnitude and opposite in direction to the applied force?

• Friction

• Normal

• Gravity

• Tension

A beam is supported at both ends by a pin and a roller. What type of forces do these supports provide in a free body diagram?

• The pin provides a horizontal reaction force only, and the roller provides a vertical reaction force only.
  

• The pin provides both horizontal and vertical reaction forces, and the roller provides a vertical reaction force only.

• Both the pin and roller provide only horizontal reaction forces.

• The pin provides a vertical reaction force only, and the roller provides both horizontal and vertical reaction forces.