Calculate torque using power equation:
Note: Conversions are important here!
ftlb
s
rad
s
ftlb
T
s
rad
rev
rad
rev
s
ftlb
hp
s
ftlb
hp
P
P
T
T
P
54
.
6302
0
.
50
/
990000
0
.
50
sec
60
min
1
1
2
min
1500
/
990000
1
/
550
1800
=
=
=
=
=
=
=
⇒
=
p
p
p
w
w
w
Using Torsion Shear Stress Formula
ksi
psi
in
in
ft
in
ftlb
J
Tc
02
.
6
6018
2
2
)
2
)(
1
/
12
(
54
.
6302
4
4
=
=
=
=
t
p
t
First Draw required FBD’s to find torque in each rod
Use twist angle formula.

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