A class __ lever never has a mechanical advantage.

Question

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

2; 3; 1
2; 3; 1

1; 2; 3
1; 2; 3

3; 2; 1
3; 2; 1

2; 1; 3
2; 1; 3

Answer 1

The correct responses are:

• A class 1 lever never has a mechanical advantage. (False, it can sometimes have a mechanical advantage depending on the distance of the forces from the fulcrum.)
• A class 2 lever always has a mechanical advantage. (True, because the effort is always closer to the fulcrum than the load.)
• A class 3 lever could go either way. (True, as it usually has no mechanical advantage, but under some conditions, it could be designed to provide some.)

So the correct order of answers is:

1; 2; 3.