In helical compression spring design formula:\(K\left ( \frac{8PC}{\pi d^2}\right)\)where P = load, C = spring index, d = wire diameter, and K = Wahl's factorThe Wahl factor takes into account:

the elastic constants (modulus of rigidity and Poisson's ratio) of the spring

the bending stress due to helix of the spring

the direct shear and the curvature of the spring

the effect of the inactive number of coils at the ends of the spring

In helical compression spring design formula:\(K\left ( \frac{8PC}{\pi

1.	In helical compression spring design formula:\(K\left ( \frac{8PC}{\pi d^2}\right)\)where P = load, C = spring index, d = wire diameter, and K = Wahl's factorThe Wahl factor takes into account:
A.	the bending stress due to helix of the spring
B.	the direct shear and the curvature of the spring
C.	the elastic constants (modulus of rigidity and Poisson's ratio) of the spring
D.	the effect of the inactive number of coils at the ends of the spring
Answer» C. the elastic constants (modulus of rigidity and Poisson's ratio) of the spring

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In helical compression spring design formula:\(K\left ( \frac{8PC}{\pi d^2}\right)\)where P = load, C = spring index, d = wire diameter, and K = Wahl's factorThe Wahl factor takes into account:

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