FinFinals Concepts Flashcards
Is a structure composed of slender members joined together at their end points
Truss
Tangential forces generated between contracting surfaces
Frictional force/ friction force
True or false:
Friction forces are present throughtout nature and exist in all machine
True
Occurs when the unlubricated surfaces of two solids are in contact under the condition of sliding
Dry friction
Friction forces that always opposes the motion, this type of friction is called ?
Coulomb Friction
The principle of coulomb friction were developed by Coulomb when?
1781
The principle of coulomb friction were developed from Morin’s work when?
1831-1834
ù s (constant)
Coefficient of static friction
Two types of dry friction
Static and kinetic
Friction that is in equilibrium
Static friction
Friction that is in motion
Kinetic friction
Occurs when adjacent layers in fluids are moving at different velocities
Fluid Friction
Occurs in all solid materials which are subjected to cyclical loading
Internal friction
A simple machine that is often used to transform an applied force into much larger force, often used to adjust elevation
Wedge
The total weight of the body which passes through a single point
Center of gravity