I NEeeeDD HELP PLEASE I HAVE FI NALS TOMOROW?

Question

OK WELL
IM STUDYINBUT I DONT REALY UNDERTAND IDEAL MACHINES

Work in = W ork out

I DONT GE THTAT HELP ME !!!!!!!

Answer 1

input distance divided by the output distance is the ideal mechanical advantage. Remember friction are neglected when calculating Ideal mechanical advantage.
Efficency is the work output divided by the work input times 100%. Because there is always friction the efficency is never friction because the work input turns into thermal energy do to friction.


ideal mechanical advantage of machines:

lever input arm divied by output arm
wheel and axle- divide diameter where input force is put into by the diameter of the place where the output force is exerted.
wedges- the thinner the higher advantage
inclined plane- distance along plane divided by lift (change in height)
screws- the closer the threads the more ideal advantage

Answer 2

An "ideal machine" is one that works perfectly without friction. So if you go through a mechanical cycle (without putting in or taking out heat energy) and get back to where you started, the work you get out must equal the work you put in.

That's the best I can do. I need more info about your course and problem; you need more time; we don't have it; don't leave your fundamental definitions to the last minute.