Mech
coplanar concurrent non-parallel force system
in this system of line of action pf all the forces meet at a point but have different directions in the same plane
coplanar concurrent parallel force system
in this system, the lines of actionof all tje forces lie in the same plane and are parallel to each other but may not have same direction
force system
is a collection of forces acting on a body in one or more planes
vector force
it can be added or subtracted to discove3 the resultant force action on an object to chabge its state of uniform motion or its state of rest
resultant force
it is a single force and assiociated torque obtained by combining a system of forces and torques acting on a rigid body
couple
it is a system of forces whose magnitude of the resultant is zero and yet has a moment sum.
rigid body
it is defined as a body on which the distance between two points never changes whatever be the force applied on it
coplanar concurrent colinear force system
it is the simplest force system and includes those forces whose vector lie along the same straight line
varignon theorem or larignon
it states that the moment of a force about any point is equal tp the algebraic sum of the moment of its components about that point
equilibrium
resultant of all forces acting on it is zero
free body diagram
a diagram shows all the forces acting on a given object
roller support
are free to rotate and translate along the surglfacr upon thich the roller rests
Engineering mechanics
branch of science which deals with the forces and their effects on bodies on which they act as a result the body may either in rest or motion
pinned support
can resist both vertical and horizontal forces but not a moment
fixed support
can resist vertical and horizontal forces as well as a moment. they also known as rigid supports
normal force
components of the contact force that is perpendicular to the surface that an object contacts
dynamic
deals with tge forces acting on a body which it is in motion
Static
deals with the forces acting on a body under which the body is in rest