If an individual spring is severed into two separate pieces, the stiffness rating for each resulting spring will be _________________?
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Answer: C. double
Explanation
Cutting a helical spring into two halves halves its total number of active coils. Spring stiffness is inversely proportional to the number of active coils in the spring. Halving the active coils therefore doubles the resulting stiffness rating for each new piece. Spring stiffness measures the force required to compress or extend a spring per unit length. The formula for helical spring deflection depends directly on active coil count and wire diameter. Shorter springs deform less under a given load because fewer coils share the displacement.
Mechanical engineers can modify existing spring rates by cutting down coils during prototyping. Suspension tuning often involves changing spring stiffness to alter vehicle handling characteristics. Altering a spring's physical length directly changes its load-bearing mechanical properties. Option A suggests the stiffness becomes half, which incorrectly assumes stiffness drops with length. Option B claims the stiffness remains the same, ignoring the effect of changing active coil count. Option D states it is unpredictable, whereas spring mechanics follow strict mathematical rules.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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