Question

Define mechanical advantage

Answer 1

Mechanical advantage:

1. Mechanical advantage can be defined as the ratio of load to the effort.
2. It is also defined as an effort arm to load arm.
3. Mathematically, we can see that, $Mechanical\mathit{}advantage\mathit{}\mathit{=}\mathit{}\frac{\mathit{l}\mathit{o}\mathit{a}\mathit{d}}{\mathit{e}\mathit{f}\mathit{f}\mathit{o}\mathit{r}\mathit{t}}\mathit{}\mathit{=}\frac{\mathit{}\mathit{e}\mathit{f}\mathit{f}\mathit{o}\mathit{r}\mathit{t}\mathit{}\mathit{a}\mathit{r}\mathit{m}}{\mathit{l}\mathit{o}\mathit{a}\mathit{d}\mathit{}\mathit{a}\mathit{r}\mathit{m}}$
   1. If effort arm > load arm, M.A > 1, example - shears.
   2. If effort arm < load arm, M.A < 1, example - scissors.
   3. If effort arm = load arm, M.A = 1, example - physical beam balance.