STATICS Flashcards
Any arrangement where two or more forces act n a body or on a group of related bodies
Force Systems
Forces whose lines of action pass through a common point
Concurrent Force Systems
Forces whose lines of action are parallel
Parallel Force Systems
Forces whose lines of action neither are parallel nor intersect on a common point
Non-concurrent Force Systems
The state of rest or motion of the rigid body is unaltered if a force acting on the body is replaced by another force of the same magnitude and direction but acting anywhere on the body along the line of action of the replaced force
Principle of Transmissibility
The combined effect of two forces may be represented by a single resultant force that is equivalent to the diagonal of a parallelogram which contains the two forces in adjacent legs
Parallelogram Law
If two forces acting on a body are represented one after another by the sides of a triangle, their resultant is represented by the closing side of the triangle taken from first point to the last point
Triangle Law
Condition where the resultant force is zero
Equilibrium
Structure that is made of straight, slender bars that are joined together to form a pattern of triangles
Truss
Force which opposes the movement or tendency of movement. It is due to the resistance to motion offered by minutely projecting particles at the contact surfaces
Friction or Frictional Force
Limiting value of frictional force when the motion is impending
Limiting Friction
Friction force when the body remains at rest and has a value between zero and the limiting friction
Static Friction
Frictional resistance experienced by the body while moving.
Dynamic Friction
Constant ratio of the magnitude of limiting friction to the normal reaction between two surfaces
Coefficient of Friction
