08-10-2012, 04:01 PM
FORCE
FORCE.ppt (Size: 1.29 MB / Downloads: 48)
.Force is an external agent whish produce or tends to produce ,destroy or tends to produce the moment of the body.
.Suppose this is a body some external forces are applied to it.
SYSTEM OF FORCES
.When to or more forces acts on a system or a body they are called to form a system of force.
.There are various types of system of forces according to the subject point of view. Such as,
.Co-planer Forces
.Co-linear Forces
.Concurrent Forces
.Co-planer concurrent Forces
.Co-planer non-concurrent Forces
.Non Co-planer concurrent Forces
Co-planer & Co-linear Forces ,
.The forces whose lines of action are on same plane is known as co-planer forces.
.The forces whose lines of action are in a same line is known as co-linear forces.
Parallel & Anti- Parallel Forces,
.Two forces may have different magnitude but acting along the same direction are called parallel forces
.Two forces anti-parallel when there lines of action are in opposite directions.
Concurrent Forces,
.The forces whose lines of action meat at a point is known as concurrent forces .
.F1,F2 & F3 are the forces whose lines of action are meat at one point so the three forces is called concurrent forces.
Co-planer concurrent , Non-concurrent & Non co-planer concurrent forces,
.The forces which meat at one point and whose lines of action lie in the same plane is known as co-planer & concurrent forces.
.the forces which do not meat at one point but there lines of action must lie in the same plane is called co-planer non current forces.
.The forces which meat at one point but their lines of action must not lie in the same plane is known as Non co-planer concurrent forces.