A class __ lever never has a mechanical advantage.

A class __ lever always has a mechanical advantage.
A class __ lever could go either way.(1 point)
Responses

2; 1; 3
2; 1; 3

2; 3; 1
2; 3; 1

3; 2; 1
3; 2; 1

1; 2; 3

1 answer

The correct response is:

1; 2; 3

Here's the reasoning:

  • A class 1 lever can have mechanical advantage, depending on the distances from the fulcrum to the effort and load.
  • A class 2 lever always has a mechanical advantage because the load is between the fulcrum and the effort.
  • A class 3 lever typically does not have a mechanical advantage as the effort is applied between the fulcrum and the load, but it can also have mechanical advantage depending on the user and application.
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