Answer
(a) $3.8Kg$
(b) $37N$
Work Step by Step
(a) We know that
$T=2\pi\sqrt{\frac{m}{K}}$
This can be rearranged as:
$m=(\frac{T}{2\pi})^2K$
We plug in the known values to obtain:
$m=(\frac{0.48}{2\pi})^2(650)$
$m=3.8Kg$
(b) We can find the weight as
$W=mg$
We plug in the known values to obtain:
$W=(3.8)(9.81)=37N$
