Levers Quick Check

Question

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Question
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

1; 2; 3
1; 2; 3

2; 3; 1
2; 3; 1

3; 2; 1
3; 2; 1

2; 1; 3
2; 1; 3
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Answer 1

The correct responses regarding the mechanical advantage of different classes of levers are:

• A class 1 lever never has a mechanical advantage. (False)
• A class 2 lever always has a mechanical advantage. (True)
• A class 3 lever could go either way. (True)

Typically, class 1 levers can provide a mechanical advantage depending on the position of the fulcrum, load, and effort. Class 2 levers always provide a mechanical advantage because the load is between the fulcrum and the effort. Class 3 levers usually do not provide a mechanical advantage but can vary based on specific configurations.

Thus, the best choice among the responses is:

2; 1; 3.

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