$[-/1$ Points$]$

SERCP$118\mathrm{.}6.$P$\mathrm{.}061.$

A solid, uniform disk lies on a horizontal table, free to rotate about a fixed vertical axis through its center while a constant tangential force applied to its edge exerts a torque of magnitude $1\mathrm{.}75{10}^{-2}N*m$ for $2\mathrm{.}20$ s $.$

$($a$)$ Calculate the magnitude of the disk's change in angular momentum $($in $kg*\frac{m^2}{s}).$

$g*\frac{m^2}{s}$

$($b$)$ Find the change in the disk's angular speed $($in rad$/$s$)$ if its mass and radius are $0\mathrm{.}230$ kg and $0\mathrm{.}180$ m $,$ respectively. ad$/$s

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