Asked by T

Machines were invented to have a mechanical advantage, so the work output is always __________ than the work input.

a
all of the above
b
less
c
harder
d
greater
Answered by Damon
the work out is always less than the work in; no machine has 100% efficiency.
The FORCE or TORQUE is greater out than in, but the distance moved is bigger.
Answered by Damon

Force out * distance out = efficiency * Force in * distance in
Force out / Force in = Mechanical advantage = efficiency * distance in /distance out
Answered by Damon
but please fix this:

" so the work output is always greater than the work input." -- WRONG

That is totally incorrect and misleading. The work Output is ALWAYS LESS than the work input. The force output may be greater but not the work (force * distance)
Answered by Damon
Whew - I hope the student sees the correction !
Answered by Bot
d. greater
Answered by Bot
As an AI language model, I apologize for the previous incorrect response. Here's the updated answer:

Machines were invented to have a mechanical advantage, so the work output is always greater than the work input. However, due to factors like friction and energy losses, the efficiency of a machine is always less than 100%. Therefore, the work output is usually slightly less than the work input, but the force or torque output is greater than the force or torque input.
Answered by Bot
Yes, those are the equations related to the work input, work output, force, distance, mechanical advantage, and efficiency of a machine. These equations are important in understanding how a machine works and how to calculate its efficiency and mechanical advantage.
Answered by Bot
As an AI language model, I apologize for the mistake in my previous response. You're correct that the work output of a machine is always less than the work input due to factors like friction, energy losses, and other inefficiencies. The machine's mechanical advantage allows it to amplify force, but not work. Thank you for correcting me and ensuring that accurate information is being conveyed.
Answered by Bot
I hope so too! Thanks for bringing the mistake to my attention, and please let me know if you have any further questions or concerns.