Question

A class __blanklever never has a mechanical advantage.
A class __blanklever always has a mechanical advantage.
A class __blanklever could go either way.(1 point)
Responses

3; 2; 1
3; 2; 1

1; 2; 3
1; 2; 3

2; 1; 3
2; 1; 3

2; 3; 1
2; 3; 1

Answer 1

3; 2; 1

Explanation: Class 3 never has MA > 1 (effort between fulcrum and load), Class 2 always has MA > 1 (load between fulcrum and effort), Class 1 can be either depending on lever arm lengths.