Question

The lever for which the mechanical advantage is less than $1$ has:

• A. fulcrum at mid point between load and effort.
• B. load between effort and fulcrum
• C. effort between fulcrum and load
• D. load and effort acting at the same point.

Answer 1

The correct option is C effort between fulcrum and load

Distance mechanical advantage (${MA}_D$) $=$ $\frac{effortmovesdistanceorinputdistance\left(d_1\right)}{effortmovesdistanceoroutputdistance\left(d_2\right)}$
here $d_1$ < $d_2$
so the value of mechanical advantage will be less than $1$.
$Note:$ Mechanical Advantage $=$ Distance Mechanical Advantage $=$ Speed Mechanical Advantage $=$ Force Mechanical Advantage