One end of a long metallic wire of length L, area of cross-section A and Young's modulus Y is tied to the ceiling. The other end is tied to a massless spring of force constant k and a mass m is hung from the free end of the spring. If m is slightly pulled down and released, then its time period of oscillation is

One end of a long metallic wire of length L, area of cross-section A a

1.	One end of a long metallic wire of length L, area of cross-section A and Young's modulus Y is tied to the ceiling. The other end is tied to a massless spring of force constant k and a mass m is hung from the free end of the spring. If m is slightly pulled down and released, then its time period of oscillation is
Answer» `2pi sqrt(m/k)` `2pi sqrt((m(YA + KL))/(YAK))` `2pi sqrt((MYA)/(KL))` `2pi sqrt((mL)/(YA))` Answer :B