Physics - Rotation Question with Solution | TestHub

A solid spherical ball of radius$\frac{5}{9} \mathrm{m}$is connected to a point$\mathrm{A}$on the wall with the help of a string which makes an angle$\theta =45°$with the vertical. The sphere can rotate freely about its central axis and it is set into rotational motion against the vertical face of the wall with an angular velocity$100 \mathrm{rad} {\mathrm{s}}^{-1}$. In how much time (in$\mathrm{s}$) will it come to rest? [$\mathrm{\mu }=0.1$]