3.2.14

Turning Effect

Test yourself

Turning Effect

A moment is the turning effect of a force around a fixed point.

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Doors

  • Doors open more easily if we press (exert force) far away from the hinge, rather than next to the hinge.
  • Pushing further away from the hinge (fixed point) means the moment is larger.
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See-saw

  • Balancing on a see-saw is a good example for demonstrating how turning effects work.
  • To balance the weight of a heavier person, a lighter person must sit further away from the pivot.
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Wrench

  • When a mechanic uses a long wrench to tighten or loosen bolts, such as those holding a car wheel in place, they will always hold it at the furthest end from the bolt.
  • This uses the turning effect to magnify the force of their hand on the wrench.

Jump to other topics

1Biology

1.1Cells, Tissues & Organs

1.2Reproduction & Variation

1.3Ecological Relationships & Classification

1.4Digestion & Nutrition

1.5Plants & Photosynthesis

1.6Biological Systems & Processes

2Chemistry

2.1Particles

2.2Chemical Reactions

2.3Atoms, Elements, Compounds

2.4The Periodic Table

2.5Materials & the Earth

2.6Reactivity

2.7Energetics

2.8Properties of Materials

3Physics

3.1Energy

3.2Forces & Motion

3.3Waves

3.4Electricity & Magnetism

3.5Matter

3.6Space Physics

4Disciplinary Knowledge

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