Q:

Levers are acted upon by forces known as the load, effort, and fulcrum. “First class” levers are characterised by having the:

waelhammad
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2022-10-22
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Levers are acted upon by forces known as the load, effort, and fulcrum. “First class” levers are characterised by having the:

  1. effort located between the other two forces
  2. load located between the other two forces
  3. fulcrum located between the other two forces
  4. the effort and the load on opposite sides of the fulcrum
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waelhammad
2022-10-22
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C: For example the atlas vertebra is the fulcrum for the lever action of nodding yes. The sternocleidomastoid and the trapezius muscles provide the effort forces. 

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