Angle of Twist and Polar Moment of Inertia Finder for Shaft
Modulus of Rigidity (GPa):

Length of Section (m)Radius of Section (m)Radius of Hollowed Section (m)
AB
BC
CD
DE
EF
FG
GH
HI
IJ
JK
Torque at point (Nm)
A
B
C
D
E
F
G
H
I
J


Torque at Section (Nm)Polar Moment of Inertia (m4)
AB
BC
CD
DE
EF
FG
GH
HI
IJ
JK
Angle of Twist (degrees)

In the figure, portion JK, or DC, includes a hollowed portion of shaft, that is why it is considered a separate section. The shaft may be considered fixed at the left end. The free end at the right is always considered point A. Make sure that all values are entered using the corresponding units.