Question

For a _________, the mechanical advantage is always less than one.

• A. first order lever
• B. second order lever
• C. third order lever
• D. both A and C

Answer 1

The correct option is C third order lever

$\text{Solution}:$

1. The mechanical advantage of a 3rd class lever is always less than 1.

2. For this class of levers, the input effort is higher than the output load, which is different from second-class levers and some first-class levers

$\text{Hence C is the correct option}$