Machinery's Handbook, 31st Edition
Spring Design
335
5 lbs.
2 ”
20 lbs.
20 lbs.
1 ”
” 1 2
Fig. 21. Right-Hand Torsion Spring P
R
a
Left Hand Torsion Springs Torque T = P R , not P radius.
Rod
Fig. 22. Left-Hand Torsion Spring The Torque is T = P 3 R , Not P 3 Radius, because the Spring is Resting Against the Support Rod at Point a.
P
P
R
Rod a
Fig. 23. Left-Hand Torsion Spring As with the Spring in Fig. 22, the Torque is T = P 3 R , Not P 3 Radius, Because the Support Point Is at a.
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