work is movement, and all movement causes friction, since there is no such thing as a "perfect" or "100% efficient" tool yet.
friction does affect work.
there could be friction inside the motor. there is friction on the wheels of the scooter and the ground. there is air friction when you move on a scooter.
answer it yourself ;)
Friction's direction is always against the direction work is being applied to.
Gravity and friction there are others also like magnetism for example..
FRICTION
A variable that has no affect on friction is Inertia
A variable that has no affect on friction is Inertia
friction
We would need to know what the friction is to affect to respond to this question.
ice can affect friction
Speed does not affect the force of friction.
Work Input = Work Output + Work done in overcoming friction.Therefore Work Input > Work Output.
Well, if, for example, you had interlocking gears, the friction would slow down the speed of how they turn. Friction also causes heat, so too much friction could make a computer or a more advanced machine, melt inside. I think that DEFINETELY affects the work of a machine.
surface friction and sliding friction
Friction will slow it down
Friction will work against force
the smoother a surface is, the less friction it produces.