engineering formulas Flashcards
1
Q
velocity ratio
A
Distance effort moves÷distance load moves.
2
Q
Torque
A
Effort×distance
3
Q
Reaction force (two forces)
A
R2=(closest force×distance to R1) + (furtherest force×R1)÷ Total distance
4
Q
Reaction force (one force)
A
R1+(force×distance to R2) ÷total length
5
Q
speed ratio
A
diameter of driver pulley÷diameter of driven pulley
6
Q
work
A
effort×distance
7
Q
gear ratio
A
number of teeth on driven gear÷teeth on driver gear
8
Q
Stress formula
A
stress=force÷area
9
Q
Mechanical advantage
A
load÷effort
10
Q
effort formula
A
multiply the lever force by the distance from the lever to the fulcrum, then divide by the distance from the fulcrum to the effort point
