Machine Design
In the case of an elastic bar fixed at upper end and loaded by a falling weight at lower end, the shock load produced can be decreased by

Remain unaffected with cross-section area
Would depend upon other factors
Decreasing the cross-section area of bar
Increasing the cross-section area of bar

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Machine Design
Form coefficient of spring is

Concerned with strength of wire of spring
Ratio of coil diameter to wire diameter
Load required to produce unit deflection
Its capability of storing energy

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