Question:-
A closely coiled helical spring is acted upon by axial force. The maximum shear stress developed in the spring is t. Half of the length of spring is cut off and the same axial force. The maximum shear stress in the spring the new condition will be
Option (A)
1/2t
Option (B)
t
Option(C)
2t
Option(D)
4t
Correct Option:
(B)
Question Solution:
Shear stress in helical spring = ks (8WD/pd3) where ks = shear stress correction factor = {1+(0.5/C)}
Hence shear stress is independent the length of spring
question-answer-faq-2927