Q1: 1. In a truss structure, forces applied at a joint can be broken down into how many components?

• A) 1
• B) 2
• C) 3
• D) 4

Q2: 2. What law states that for an object to be in equilibrium, the sum of all forces acting on it must be zero?

• A) Newton's First Law
• B) Newton's Second Law
• C) Newton's Third Law
• D) Principle of Moments

Q3: 3. When two forces act on an object in opposite directions along the same line of action, what is the resultant force?

• A) The sum of the two forces
• B) The difference between the two forces
• C) The average of the two forces
• D) The maximum of the two forces

Q4: 4. Which of the following represents a system of coplanar forces in equilibrium?

• A) A book resting on a table
• B) A kite flying in the wind
• C) A rocket launching into space
• D) A car accelerating on a highway

Q5: 5. When multiple forces act on a body but their lines of action do not meet at a single point, what is this system called?

• A) Concurrent force system
• B) Non-concurrent force system
• C) Parallel force system
• D) Collinear force system

Q6: 6. Which method is commonly used to determine the resultant of concurrent coplanar forces?

• A) Triangle Law
• B) Parallelogram Law
• C) Polygon Law
• D) Newton's Law

Q7: 7. If three coplanar forces are in equilibrium, what can be said about their vector sum?

• A) It is zero
• B) It is maximum
• C) It is undefined
• D) It is infinite

Q8: 8. Which of the following is an example of a non-coplanar force system?

• A) A car driving on a straight road
• B) A pendulum swinging back and forth
• C) A helicopter hovering in the air
• D) A boat sailing in a river

Q9: 9. When two forces act on an object at an angle to each other, what is the resultant force equal to?

• A) The sum of the two forces
• B) The difference between the two forces
• C) The product of the two forces
• D) The average of the two forces

Q10: 10. Which law states that a force applied to an object will cause a change in its motion?

• A) Newton's First Law
• B) Newton's Second Law
• C) Newton's Third Law
• D) Law of Inertia

Q11: 11. In a system of concurrent forces, if the forces are in equilibrium, what can be said about the moments about any point?

• A) They are zero
• B) They are maximum
• C) They are opposite
• D) They are constant

Q12: 12. When analyzing a system of forces, what is the purpose of resolving forces into components?

• A) To increase the magnitude of the forces
• B) To simplify the calculations
• C) To reduce the number of forces
• D) To introduce more complexities

Q13: 13. Which of the following statements is true about a system of parallel forces in equilibrium?

• A) Their lines of action are not parallel
• B) Their lines of action intersect at a point
• C) Their lines of action are parallel
• D) Their lines of action are collinear

Q14: 14. For a system of forces to be in equilibrium, what condition must be satisfied?

• A) The forces must have the same magnitude
• B) The forces must have different directions
• C) The vector sum of the forces must be zero
• D) The forces must be non-parallel

Q15: 15. When resolving a force into components, which trigonometric functions are commonly used?

• A) Sine and cosine
• B) Tangent and secant
• C) Cosine and tangent
• D) Sine and tangent

Q16: 16. Which law states that for every action, there is an equal and opposite reaction?

• A) Newton's First Law
• B) Newton's Second Law
• C) Newton's Third Law
• D) Law of Gravitation

Q17: 17. In a system of concurrent forces, which condition indicates that the system is in equilibrium?

• A) The forces are parallel
• B) The forces are collinear
• C) The forces are not parallel
• D) The vector sum of the forces is zero

Q18: 18. When analyzing a system of forces, what is the significance of the principle of transmissibility?

• A) It determines the direction of the forces
• B) It changes the magnitude of the forces
• C) It indicates the point of application of a force
• D) It affects the stability of the system

Q19: 19. Which of the following is a scalar quantity related to forces in a system?

• A) Displacement
• B) Velocity
• C) Acceleration
• D) Mass

Q20: 20. When analyzing a system of forces, what is the term used to describe the tendency of a force to rotate an object about an axis?

• A) Torque
• B) Momentum
• C) Inertia
• D) Friction

Q21: 21. Which law states that the rate of change of momentum of an object is directly proportional to the applied force?

• A) Newton's First Law
• B) Newton's Second Law
• C) Newton's Third Law
• D) Law of Conservation of Momentum

Q22: 22. In a system of parallel forces, what effect does changing the line of action of a force have on the system?

• A) It increases the magnitude of the forces
• B) It changes the direction of the forces
• C) It introduces a moment about an axis
• D) It does not affect the equilibrium of the system

Q23: 23. Which of the following is a property of a force that causes objects to rotate?

• A) Magnitude
• B) Direction
• C) Line of action
• D) Moment arm

Q24: 24. When calculating the resultant of two forces acting at an angle to each other, which law can be used to determine the direction and magnitude of the resultant?

• A) Triangle Law
• B) Parallelogram Law
• C) Polygon Law
• D) Law of Cosines

Q25: 25. In a system of concurrent forces, if the forces are not in equilibrium, what can be said about the moments about any point?

• A) They are zero
• B) They are maximum
• C) They are opposite
• D) They are not balanced