Q:

Third class lever systems are always ineffi cient for which one of the following reasons?

waelhammad
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2022-10-22
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Third class lever systems are always ineffi cient for which one of the following reasons?

  1. the effort arm is longer than the load arm.
  2. the effort force required is less than the load force.
  3. the fulcrum lies between the effort and the load.
  4. the load arm is longer than the effort arm.
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waelhammad
2022-10-22
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D: By defi nition of third class levers, the load arm is always longer than the effort arm. A spanner tightening a nut has a long effort arm and is a mixture of fi rst and second class lever. 

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