$8.($a$)(10$ pts $)$ A grandfather clock bas a pendulum length $0\mathrm{.}7$ m $($with ignorable mass$)$ and a bob at the end of mass $0\mathrm{.}4$ kg A seonad mass of $2$ kg falls $0\mathrm{.}8$ m in $7$ days to larep the amplitude of the pendulum's oscillation stendy at $0\mathrm{.}03$ rad. What is the quality factor $\backslash ($ Q $\backslash )$ of the system? $($b$)(5$ pts $)$ All other quantities from part $($a$)$ are kept the same, but the $2$ kg mas is removed and replaced with a $0\mathrm{.}4$ kg mass. What bappens to the quality factor of the system?