Reference Guide

Equation Reference 5-43
Example:
Given: xm=10_cm, ω =15_r/s, φ =25_°, t=25_ µ s.
Solution: x=9.0615_cm, v= -0.6344_m/s, a= -20.3884_m/s^2, f= 2.3873_Hz.
Plane Geometry (11)
Variable
Description
β
Central angle of polygon
θ
Vertex angle of polygon
A
Area
b
Base length (Rectangle, Triangle), or
Length of semiaxis in x direction (Ellipse)
C
Circumference
d
Distance to rotation axis in y direction
h
Height (Rectangle, Triangle), or
Length of semiaxis in y direction (Ellipse)
I, Ix
Moment of inertia about x axis
Id
Moment of inertia in x direction at d
Iy
Moment of inertia about y axis
J
Polar moment of inertia at centroid
L
Side length of polygon
n
Number of sides
P
Perimeter
r
Radius
ri, ro
Inside and outside radii
rs
Distance to side of polygon
rv
Distance to vertex of polygon
v
Horizontal distance to vertex
Reference: 4.