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Review Lite 1-5 - Coggle Diagram
Review Lite 1-5
Moment of a Force
sign convention
clockwise = positive
counterclockwise = negative
from a point
from a line
principle of transmissibility
Equilibrium of Forces
Conditions of Equilibrium
Summation of horizontal forces = 0
Summation of vertical forces = 0
Summation of moments about a point = 0
Types of connections
cable
weightless link
roller / rocker / smooth contacting surface
roller or pin in confined smooth slot
member pin connected to collar on mooth rod
smooth pin or hinge
member fixed connected to collar on smooth rod
fixed support
Two forces
Three or more coplanar forces
analytical method
complex mode
Force-polygon method
head-tail connection
sine law, cosine law
Distributed load
uniformly distributed load
uniformly varying load
1st degree
combination
Concurrent Coplanar
unknown 1 side
unknown 1 side, 1 angle
rotate the axis
Resultant
Parallel Nonconcurrent Coplanar Forces
Varignon's Theorem
Example
all parallel forces
varying load
STAT mode
application to geotechnical engineering
Non-Parallel Nonconcurrent Coplanar Forces
Example
with angle
with couple