Prob $6\mathrm{.}16$

$6\mathrm{.}16$ A homogeneous solid cylinder of radius $300$ mm is shown with a fine wire held fixed at A and wrapped around the cylinder. If the cylinder is released from rest, what will its velocity be when it has dropped $3$ m $?$ Ref. Fig. Ans. $6\mathrm{.}26\frac{m}{s}$

Rad $300$ mm