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Why are the third class lever systems of the human musculoskeletal system ineffi cient? Because

waelhammad
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2022-10-22
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Why are the third class lever systems of the human musculoskeletal system ineffi cient? Because

  1. third-class lever systems are the least effi cient.
  2. the muscle insertion is closer to the joint than the load is.
  3. muscles can contract only by about twenty per cent of their relaxed length.
  4. the force of muscle tension is less than the weight of the load.
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waelhammad
2022-10-22
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B: When the muscle insertion is closer to the joint than is the load, the effort arm is short. This means that the effort force must be large to provide the same torque exerted by the load acting on its longer load arm. 

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