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