Lesson 3.04a

3.04a Moments and statics Quiz: OCR Maths, Unit 19

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

In partnership with Revision Ninja

Lesson 3.04a, Moments and statics: 20 multiple choice questions for the OCR Maths (H240), Unit 19: Moments, written with Revision Ninja.

Host it live on the board and students join with a game code on their own devices, or revise alone with Free Play. The answers are revealed in the game.

Host this setFree Play

The 20 questions

  1. What distance is multiplied by force to calculate the moment about a point?

    • Vertical distance
    • Direct distance
    • Parallel distance
    • Perpendicular distance

  2. What are the SI units of a moment?

    • kg m s^-1
    • N
    • N m
    • N m^-1

  3. For a rigid body in static equilibrium, what must both resultant force and resultant moment be?

    • Constant
    • Positive
    • Zero
    • Equal

  4. At which point on a uniform rod does its weight act?

    • At either end
    • At its midpoint
    • At one-quarter length
    • At three-quarters length

  5. At which point does the weight of a uniform rectangular lamina act?

    • At the perimeter
    • At the corners
    • Centre of symmetry
    • Along one edge

  6. When is the moment of a force about a specified point equal to zero?

    • Force acts perpendicularly
    • Line passes through point
    • Velocity is constant
    • Distance is maximised

  7. Where does the weight of a non-uniform rod act?

    • At either end
    • Geometric centre
    • Centre of mass
    • Always the midpoint

  8. A force of 12 N acts at a perpendicular distance of 0.5 m from a point. What is its moment about that point?

    • 24 N m
    • 6 N m
    • 12.5 N m
    • 0.042 N m

  9. A force of 10 N acts at 60 degrees to a rod of length 2 m, applied at the far end of the rod. What is its moment about the other end of the rod, to 2 decimal places?

    • 10.00 N m
    • 8.66 N m
    • 20.00 N m
    • 17.32 N m

  10. A uniform horizontal rod AB of length 4 m and weight 60 N is supported by two vertical forces at its ends A and B only. What is the reaction at each end?

    • 60 N
    • 30 N
    • 120 N
    • 15 N

  11. A uniform beam of length 6 m and weight 40 N is held horizontal by a pivot at its left end and a vertical string at its right end. What is the tension in the string?

    • 20 N
    • 10 N
    • 60 N
    • 40 N

  12. A uniform rod of length 2 m and weight 20 N is pivoted at one end. What is the moment of its weight about the pivot?

    • 20 N m
    • 0 N m
    • 10 N m
    • 40 N m

  13. A horizontal rod has a 30 N force acting 2 m to the left of a pivot, and a force of 15 N acting to the right of the pivot. For the rod to be in equilibrium, at what distance to the right of the pivot must the 15 N force act?

    • 4 m
    • 8 m
    • 1 m
    • 2 m

  14. A uniform beam AB of length 4 m and weight 40 N is pivoted at A. A 10 N load acts downward at 1 m from A, and a vertical rope at B holds the beam horizontal. What is the tension in the rope?

    • 20 N
    • 25 N
    • 50 N
    • 22.5 N

  15. A uniform horizontal beam of length 6 m and weight 60 N rests on supports at its ends A and B. A load of 30 N is placed 2 m from A. What is the reaction at A?

    • 40 N
    • 50 N
    • 60 N
    • 30 N

  16. A weightless beam AB of length 5 m is pivoted at A. Downward loads of 10 N at 1 m and 20 N at 4 m from A act on it. What upward force at B keeps the beam horizontal?

    • 30 N
    • 18 N
    • 15 N
    • 9 N

  17. A uniform ladder of length 4 m and weight 80 N rests against a smooth vertical wall, making 60 degrees with horizontal ground. Taking moments about the foot of the ladder, what is the horizontal force from the wall, to 1 decimal place?

    • 46.2 N
    • 11.5 N
    • 23.1 N
    • 40.0 N

  18. A uniform rectangular lamina of weight 50 N has its centre 0.3 m horizontally from a pivot. What is the moment of its weight about the pivot?

    • 50 N m
    • 0.3 N m
    • 150 N m
    • 15 N m

  19. What property of a rod ensures its weight acts at its midpoint?

    • Uniformity
    • Smoothness
    • Lightness
    • Inextensibility

  20. What force balances the horizontal reaction from a smooth vertical wall on a resting ladder?

    • Normal contact force
    • Friction at ground
    • Weight of ladder
    • Upward wall reaction

All OCR Maths quizzes