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Turning effect of forces

1.5.5

What the syllabus asks of you

  • Describe the moment of a force as a measure of its turning effect and give everyday examples
  • Define the moment of a force as moment = force × perpendicular distance from the pivot; recall and use this equation
  • State and use the principle of moments for an object in equilibrium
  • Describe an experiment to verify the principle of moments

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Chapter 1: Turning effect of forces

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24 questions

1May / June 2026 · Paper 11 · Q11
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Athe direction of a force
Bthe moment of a force
Cthe momentum of a force
Dthe perpendicular distance of a force

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2Oct / Nov 2025 · Paper 11 · Q5
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A\frac{W}{8S}
B\frac{3W}{8S}
C\frac{W}{4S}
D\frac{3W}{4S}

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3Oct / Nov 2025 · Paper 12 · Q13
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A
B
C
D

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4Oct / Nov 2024 · Paper 11 · Q13
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A17.5 cm
B22.5 cm
C35.0 cm
D37.5 cm

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5Oct / Nov 2024 · Paper 12 · Q9
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AF / d
BF / l
CF × d
DF × l

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6May / June 2024 · Paper 11 · Q8
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A1 and 2
B1 and 3
C2 only
D3 only

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7May / June 2024 · Paper 12 · Q12
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A0.91 m
B3.5 m
C5.8 m
D8.1 m

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8Oct / Nov 2023 · Paper 11 · Q6
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AFd1
BFd2
CFd3
DFd4

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9Oct / Nov 2023 · Paper 11 · Q7
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A1/3 W
B1/2 W
C2/3 W
D4/3 W

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10May / June 2023 · Paper 11 · Q9Also set in May / June 2016 Paper 11
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A36 N
B40 N
C90 N
D100 N

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11May / June 2023 · Paper 12 · Q11
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A20 N acting downwards, 40 cm to the right of the pivot
B20 N acting upwards, 40 cm to the right of the pivot
C50 N acting downwards, 10 cm to the left of the pivot
D50 N acting upwards, 10 cm to the left of the pivot

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12Oct / Nov 2022 · Paper 12 · Q12Also set in Oct / Nov 2022 Paper 11
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A6.0 N
B12 N
C30 N
D60 N

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13May / June 2022 · Paper 12 · Q7
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A2.5 N
B5.0 N
C10 N
D160 N

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14May / June 2021 · Paper 11 · Q8
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A80 g
B100 g
C400 g
D800 g

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15May / June 2021 · Paper 12 · Q8
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Apivot, 90 cm, 50 N
Bpivot, 2.0 m, 30 N
Cpivot, 50 cm, 80 N
Dpivot, 3.0 m, 18 N

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16Oct / Nov 2020 · Paper 11 · Q10
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AFw
BFx
CFy
DFz

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17Oct / Nov 2019 · Paper 11 · Q11
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Adistance the force moves from the pivot ÷ force
Bforce × distance the force moves from the pivot
Cforce × perpendicular distance of the force from the pivot
Dforce ÷ perpendicular distance of the force from the pivot

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18May / June 2019 · Paper 12 · Q10Also set in May / June 2019 Paper 11
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A1.0 N
B4.0 N
C16 N
D40 N

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19May / June 2018 · Paper 11 · Q9
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A200 N
B240 N
C280 N
D1400 N

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20May / June 2018 · Paper 12 · Q7
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AIt does not move.
BIt moves to the right.
CIt moves upwards.
DIt starts to rotate.

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21May / June 2018 · Paper 12 · Q10
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AThe mass of X is 0.4 times the mass of Y.
BThe mass of X is 2.5 times the mass of Y.
CThe mass of X is 3.5 times the mass of Y.
DThe mass of X is equal to the mass of Y.

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22Oct / Nov 2017 · Paper 12 · Q7
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A500 N m
B750 N m
C1000 N m
D1500 N m

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23May / June 2017 · Paper 11 · Q12
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A0.020 m
B0.050 m
C0.20 m
D0.48 m

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24May / June 2016 · Paper 12 · Q6
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Asize / N: 2.0; direction: downwards
Bsize / N: 2.0; direction: upwards
Csize / N: 4.0; direction: downwards
Dsize / N: 4.0; direction: upwards

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