Project ForgeMachine Design
Design Against Static Load
GATE 2016
Easy
The spring constant of a helical compression spring DOES NOT depend on
- Acoil diameter
- material strength
- Cnumber of active turns
- Dwire diameter
Explanation
Spring constant k = Gd⁴/(8D³n), depending on shear modulus G, wire diameter d, coil diameter D, and number of active turns n — not on the material's strength (yield/tensile), which only affects the load capacity, not the stiffness.
Source: GATE ME 2016 Set-1 (2016)
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