engineering formulas

Question 1

velocity ratio

Answer 1

Distance effort moves÷distance load moves.

Question 2

Torque

Answer 2

Effort×distance

Question 3

Reaction force (two forces)

Answer 3

R2=(closest force×distance to R1) + (furtherest force×R1)÷ Total distance

Question 4

Reaction force (one force)

Answer 4

R1+(force×distance to R2) ÷total length

Question 5

speed ratio

Answer 5

diameter of driver pulley÷diameter of driven pulley

Question 6

work

Answer 6

effort×distance

Question 7

gear ratio

Answer 7

number of teeth on driven gear÷teeth on driver gear

Question 8

Stress formula

Answer 8

stress=force÷area

Question 9

Mechanical advantage

Answer 9

load÷effort

Question 10

effort formula

Answer 10

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