Examine the figure shown below and answer the question that follows.
Given $F L = 2 m$ and $L E = 1 m$ , calculate the mechanical advantage of the lever as shown above.

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Solution

Step 1: Given data
Given FL (Load arm) $= 2 m$
FE (Effort arm) $= F L + L E = 2 m + 1 m = 3 m$
Step 2: Formula used

$M e c h a n i c a l a d v a n t a g e i s g i v e n a s, M A = \frac{E f f o r t a r m}{L o a d a r m}$
Step 3: Calculation for mechanical advantage
Substituting the value of the effort arm and load arm we get-
$M A = \frac{3 m}{2 m} M A = 1.5$
Hence, mechanical advantage of the above lever is $1.5$ .

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