Classical Mechanics MCQs

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1. Which law of motion states that every object persists in its state of rest or uniform motion unless acted upon by an external force?





2. What quantity is defined as the rate of change of momentum of an object?





3. Which of the following is not a unit of force in the SI system?





4. Newton’s Second Law of Motion can be mathematically expressed as:





5. The momentum of an object is given by:





6. Which law of motion states that for every action, there is an equal and opposite reaction?





7. The gravitational force between two masses is described by:





8. Which of the following is not a conservative force?





9. Work done by a force is defined as:





10. The SI unit of work is:





11. Which principle states that total mechanical energy remains constant for conservative forces?





12. The kinetic energy of an object is given by:





13. The gravitational potential energy near Earth’s surface is:





14. Which statement about projectile motion is correct?





15. Which Newton’s law deals with inertia?





16. Which statement about circular motion is correct?





17. Which quantity is conserved in elastic collisions?





18. A body floats due to which principle?





19. Torque is best described as:





20. Which statement about Newton’s Third Law is correct?





21. Which is NOT a unit of force?





22. Which is a non-conservative force?





23. Which equation represents Newton’s Second Law?





24. Energy cannot be created or destroyed is stated by:





25. Which is a scalar quantity?





26. Resistance to change in motion is called:





27. Which is NOT a type of equilibrium?





28. Impulse is defined as:





29. Which statement about circular motion is true?





30. Which law is written as F = dp/dt?





31. Which of the following is a conservative force?





32. Which statement about work is correct?





33. Which principle explains floating of boats?





34. The SI unit of torque is:





35. Rotational inertia is measured by:





36. Rate of change of angular displacement is:





37. Which statement about angular momentum is correct?





38. Action–reaction forces are explained by:





39. Restoring force after small displacement defines:





40. Conservation of energy states:





41. Work done per unit time is:





42. Correct statement about projectile motion:





43. Which quantity is conserved in perfectly elastic collisions?





44. Work–energy theorem states:





45. F = ma summarizes:





46. Torque is best described as:





47. Which statement about friction is correct?





48. Resistance to rotational motion is measured by:






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