Moments & Coplanar forces
Moment of a force: This is the product of the magnitude of the forces &
perpendicular distances from any point to the line of action.
Determining the moment:
Tree Steps
(1) Determine perpendicular distance
(2) Calculate the magnitude(volume)of the moment
(3) Determine the sign.
Couple:
Two force that have equal magnitude, opposite direction & different line of actions are called couple.
Types of reaction(Supports) of Beam
(1) Roller or simple support
(2) Hinged or pin Support
(3) Fixed support
Types of loading.
(1) Concentrated loading
(2) Uniformly distributed loading
(3) Uniformly varying loading
Shear forces: The shear force at a section may be defined as the algebraic sum
of all the external forces acting parallel to the section on either left or right
of the section.
Bending moment:
It is the algebraic sum of the moments of all external forces acting on either the
left or the right of the section.
Sunday 09 2014
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