kg/square millimeter
N/square meter
ksi
ksc
Conservation of mass
Conservation of momentum
Net work done
Conservation of energy
A circle
A cycloid
An involute
A parabola
Surface flatness
Hardness
Surface roughness
Internal voids
Along an involute
Along a straight line
Along the base circle
Along the pitch circle
The path of contact in involute gears is along a straight line.