Problem 4.. A closely coiled helical spring
made of 10 mm diameter steel wire has 15
coils of 100 mm mean diameter. The spring is
subjected to an axial load of 100 N. Calculate:
(i) The maximum shear stress induced,
(ii) The deflection, and
(iii) Stiffness of the spring.
Take modulus of rigidity, C = 8.16 * 10 ^ 4
N/mm^2