A mass oscillates with a period of 2.8 s on the end of a spring that has a spring constant of 75 N/m. What is the magnitude of the mass?

Answer 1

T =2•π•sqrt(m/k),

m = T²•k/4•π² =2.8²•75/4•π² =14.9 kg.

Answer 2

yeah you just do it