Explanation
\(\text { Mechanical advantage }=\frac{\text { Outputforce }}{\text { Inputforce }}=\frac{\text { Load }}{\text { Effort }}=8 \mathrm{lbs} / 2 \mathrm{lbs}=4\)
If Gear 1 moves in a clockwise direction, which other gears also turn clockwise?
The diagram below represents a load sliding down an incline. Which of the forces (A,B,C, or D) represent friction?