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Moments and levers

8th grade (Year 9 in England) · 16 questions · Common Core: NGSS.MS-PS2-2 · England: KS3 Physics: Motion and forces (balanced forces), KS2 Y5 Forces

Name

Date

Score/ 16

  1. Question 1

    A force of 50 N is applied 0.2 m from a pivot, at right angles. What is the moment, in N m?

    AnswerNm

  2. Question 2

    On a seesaw, a child weighing 600 N sits 1 m from the pivot. How heavy must a second child sitting 3 m on the other side be to balance it, in N?

    AnswerN

  3. Question 3

    Two children balance on a seesaw. The heavier child must sit…

    • A. closer to the pivot
    • B. exactly at the end
    • C. further from the pivot
    • D. on the same side as the lighter child

  4. Question 4

    A force of 25 N is applied 1.5 m from a pivot, at right angles. What is the moment, in N m?

    AnswerNm

  5. Question 5

    On a seesaw, a child weighing 500 N sits 2 m from the pivot. How heavy must a second child sitting 2.5 m on the other side be to balance it, in N?

    AnswerN

  6. Question 6

    What is the pivot of a lever?

    • A. the force you apply
    • B. the heaviest end
    • C. the point it turns around (the fulcrum)
    • D. the load

  7. Question 7

    A force of 50 N is applied 2 m from a pivot, at right angles. What is the moment, in N m?

    AnswerNm

  8. Question 8

    On a seesaw, a child weighing 200 N sits 2 m from the pivot. How heavy must a second child sitting 3 m on the other side be to balance it, in N?

    AnswerN

  9. Question 9

    Two children balance on a seesaw. The heavier child must sit…

    • A. further from the pivot
    • B. on the same side as the lighter child
    • C. exactly at the end
    • D. closer to the pivot

  10. Question 10

    A force of 50 N is applied 0.2 m from a pivot, at right angles. What is the moment, in N m?

    AnswerNm

  11. Question 11

    On a seesaw, a child weighing 200 N sits 1.5 m from the pivot. How heavy must a second child sitting 2 m on the other side be to balance it, in N?

    AnswerN

  12. Question 12

    Why does a long spanner (wrench) make it easier to undo a tight nut?

    • A. It removes friction
    • B. It reduces the mass of the nut
    • C. The longer handle increases the moment
    • D. It is made of a stronger metal

  13. Question 13

    A force of 5 N is applied 0.75 m from a pivot, at right angles. What is the moment, in N m?

    AnswerNm

  14. Question 14

    On a seesaw, a child weighing 300 N sits 1.5 m from the pivot. How heavy must a second child sitting 2.5 m on the other side be to balance it, in N?

    AnswerN

  15. Question 15

    What is the pivot of a lever?

    • A. the heaviest end
    • B. the point it turns around (the fulcrum)
    • C. the force you apply
    • D. the load

  16. Question 16

    A force of 50 N is applied 0.75 m from a pivot, at right angles. What is the moment, in N m?

    AnswerNm

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  1. 10 Nm
  2. 200 N
  3. closer to the pivot
  4. 37.5 Nm
  5. 400 N
  6. the point it turns around (the fulcrum)
  7. 100 Nm
  8. 133.33 N
  9. closer to the pivot
  10. 10 Nm
  11. 150 N
  12. The longer handle increases the moment
  13. 3.75 Nm
  14. 180 N
  15. the point it turns around (the fulcrum)
  16. 37.5 Nm