question_answer

If a mass 'm' oscillates on a spring having a mass   \[{{m}_{s}}\] and stiffness ?k?, then the natural frequency of the system is given by:

A) \[\sqrt{\frac{k}{m+\frac{{{m}_{s}}}{3}}}\]                  

B) \[\sqrt{\frac{k}{\frac{m}{3}+{{m}_{s}}}}\]

C) \[\sqrt{\frac{3k}{m+{{m}_{s}}}}\]                   

D) \[\sqrt{\frac{k}{m+{{m}_{s}}}}\]