Free Body Diagrams
Practice Exam- 2025
2026[Complete Exam
prep Questions with
verified Answers]
100%Correct Answers
1. What is the purpose of a free body diagram (FBD)?
A. To show internal forces only
B. To show all external forces acting on an object
C. To calculate speed
D. To show energy changes
Answer: B. To show all external forces acting on an object
Rationale: A free body diagram isolates an object and shows
all external forces acting on it.
2. Which force always acts downward near Earth’s surface?
A. Friction
B. Tension
,C. Weight
D. Applied force
Answer: C. Weight
Rationale: Weight is the gravitational force acting toward the
center of Earth.
3. A box resting on a table experiences an upward force
from the table called:
A. Tension
B. Normal force
C. Friction
D. Air resistance
Answer: B. Normal force
Rationale: The normal force acts perpendicular to the surface
supporting the object.
4. Which force opposes motion between two surfaces?
A. Gravity
B. Friction
C. Tension
D. Magnetic force
Answer: B. Friction
Rationale: Friction acts opposite the direction of motion or
attempted motion.
5. In a free body diagram, forces are represented by:
A. Circles
B. Squares
, C. Arrows
D. Dots
Answer: C. Arrows
Rationale: Arrows show both the magnitude and direction of
forces.
6. A hanging sign suspended by a rope experiences tension
in which direction?
A. Downward
B. Sideways
C. Upward along the rope
D. Randomly
Answer: C. Upward along the rope
Rationale: Tension always acts along the rope or cable pulling
away from the object.
7. If forces on an object are balanced, the net force is:
A. Positive
B. Negative
C. Zero
D. Infinite
Answer: C. Zero
Rationale: Balanced forces result in no acceleration and a net
force of zero.
8. A car accelerating forward experiences friction from the
road acting:
A. Backward
B. Upward
Practice Exam- 2025
2026[Complete Exam
prep Questions with
verified Answers]
100%Correct Answers
1. What is the purpose of a free body diagram (FBD)?
A. To show internal forces only
B. To show all external forces acting on an object
C. To calculate speed
D. To show energy changes
Answer: B. To show all external forces acting on an object
Rationale: A free body diagram isolates an object and shows
all external forces acting on it.
2. Which force always acts downward near Earth’s surface?
A. Friction
B. Tension
,C. Weight
D. Applied force
Answer: C. Weight
Rationale: Weight is the gravitational force acting toward the
center of Earth.
3. A box resting on a table experiences an upward force
from the table called:
A. Tension
B. Normal force
C. Friction
D. Air resistance
Answer: B. Normal force
Rationale: The normal force acts perpendicular to the surface
supporting the object.
4. Which force opposes motion between two surfaces?
A. Gravity
B. Friction
C. Tension
D. Magnetic force
Answer: B. Friction
Rationale: Friction acts opposite the direction of motion or
attempted motion.
5. In a free body diagram, forces are represented by:
A. Circles
B. Squares
, C. Arrows
D. Dots
Answer: C. Arrows
Rationale: Arrows show both the magnitude and direction of
forces.
6. A hanging sign suspended by a rope experiences tension
in which direction?
A. Downward
B. Sideways
C. Upward along the rope
D. Randomly
Answer: C. Upward along the rope
Rationale: Tension always acts along the rope or cable pulling
away from the object.
7. If forces on an object are balanced, the net force is:
A. Positive
B. Negative
C. Zero
D. Infinite
Answer: C. Zero
Rationale: Balanced forces result in no acceleration and a net
force of zero.
8. A car accelerating forward experiences friction from the
road acting:
A. Backward
B. Upward
