"a 20n force applied to the handle of a door produces 44n output force. what is the ama of the handle?" i don't want the answer but can you like give me a formula for it?

Question

jamesj · Answer

what does 'ama' mean?

anonymous · Answer

actual mechanical advantage

jamesj · Answer

And what's the definition of it?

anonymous · Answer

the advantage of a real machine. it takes into consideration real world factors like friction

jamesj · Answer

By definition mechanical advantage, MA, is defined quantitatively as
$$ MA = \frac{F_{out}}{F_{in}} $$

Hence for your problem
$$ F_{in} = 20 \ N $$ and $$ F_{out} = 44 \ N $$ Therefore MA = ... what?

anonymous · Answer

2.2 J?

jamesj · Answer

The units are not Joules.  MA by definition is unit less.  But yes, 2.2 is the value.

anonymous · Answer

okay. Thanks