Question

The force constant of a wire does not depend on

• A. Nature of the material
• B. Radius of the wire
• C. Length of the wire
• D. None of the above

Answer 1

Answer: (D)

None of the above

Answer 2

$K = \frac { Y A } { L } = \frac { Y \times \pi r ^ { 2 } } { L } \Rightarrow K \propto \frac { Y r ^ { 2 } } { L }$

i.e. force constant of a wire depends on young's modules (nature of the material), radius of the wire and length of the wire.