Question

which class lever has mechanical advantage always less than 1?
A) class 1
B) class 2
C) class 3
D) none of these

Answer 1

I think (d) none of these.

Answer 2

Answer:

Class 3 lever has mechanical advantage always lesser than 1

Option C

Explanation:

In case of class 3 lever, a mechanical advantage is always lesser than 3. Hence, the effort applied is always lesser than an output. In case of class 1 lever, a fulcrum is between an effort and load.

In case of class 2 level, a load is between an effort and fulcrum. In the case of class 3 lever, an effort is between a fulcrum and load.