Machine Design
In composite or reverse laid ropes

Direction of twist of wires and strands are same
Direction of twist of wires in strands is opposite to the direction of twist of strands
Wires in two adjacent strands are twisted in opposite direction
Wires are not twisted

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Machine Design
Spring stiffness is

Its capability of storing energy
Load required to produce unit deflection
Ratio of coil diameter to wire diameter
Its ability to absorb shocks

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