block $1$ mass$1=430$g$,$ block $2$ mass$2=560$g$,$ and pulley on frictionless horizontal axle and has radius R$=5\mathrm{.}0$cm$.$ when released from rest, block $2$ falls $71$ cm in $4\mathrm{.}9$s without cord slipping on the pulley. $($a$)$ what's magnitude of acceleration of blocks? what're $($b$)$ tension T$2($tension force on block $2)$ and $($c$)$ tension T$1($tension force on block $1)?($d$)$ what's magnitude of pulley's angular acceleration? $($e$)$ what's its rotational inertia?