# A man is using a machine and applying 400 N of force. If the mechanical advantage of this machine is doubled, how much force would he have to apply?

Nov 26, 2015

$200 \text{N}$

#### Explanation:

$\therefore M A = \frac{L}{400}$
You can see that if $M A$ were to double then the effort would need to be reduced to $\text{200"N}$ to double the quotient.