The stiffness of a closely coiled helical spring subjected to an axial load W is equal to (where G = Modulus of rigidity, and n = Number of active coils)

The stiffness of a closely coiled helical spring subjected to an axia

1.	The stiffness of a closely coiled helical spring subjected to an axial load W is equal to (where G = Modulus of rigidity, and n = Number of active coils)
A.	Gd⁴/ 8D3n
B.	Gd3/ 8D3n
C.	Gd⁴/ 4D3n
D.	Gd⁴/ 8D²n
Answer» B. Gd3/ 8D3n

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The stiffness of a closely coiled helical spring subjected to an axial load W is equal to (where G = Modulus of rigidity, and n = Number of active coils)

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